CN117296444A

CN117296444A - Access point, station and wireless communication method

Info

Publication number: CN117296444A
Application number: CN202180098192.2A
Authority: CN
Inventors: 黄磊; 罗朝明
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2021-06-24
Filing date: 2021-06-24
Publication date: 2023-12-26
Also published as: WO2022266977A1; US20240097865A1; EP4338548A1; KR20240023054A; CA3223872A1

Abstract

An Access Point (AP), a Station (STA), and a wireless communication method are provided. The wireless communication method comprises the following steps: the STA determines operation mode information including: a maximum Number of Spatial Streams (NSS) supported by the STA when transmitting or receiving an Extremely High Throughput (EHT) physical layer protocol data unit (PPDU); and the STA determines a maximum NSS based on an operation channel width of the STA and a Bandwidth (BW) of the EHT PPDU. This can solve the problems of the prior art, change the Operation Mode (OM) efficiently, provide good communication performance, and/or provide high reliability.

Description

Access point, station and wireless communication method

Technical Field

The present invention relates to the field of communication systems, and in particular, to an Access Point (AP), station (STA), and wireless communication method, which can provide good communication performance and/or provide high reliability.

Background

Communication systems, such as wireless communication systems, are widely deployed to provide various types of communication content such as voice, video, packet data, messaging, broadcast, and so on. Such a communication system may be a multiple access system capable of supporting communication with multiple users by sharing available system resources (e.g., time, frequency, and power). The wireless network may include an Access Point (AP) that may communicate with one or more Stations (STAs) or mobile devices; the wireless network is, for example, a wireless local area network (Wireless Local Area Network, WLAN), such as a Wi-Fi (institute of electrical and electronics engineers (Institute of Electrical and Electronics Engineers, IEEE) 802.11) network. WLAN enables users to wirelessly access the internet based on radio frequency technology in a home, office, or specific service area using a portable terminal; portable terminals such as: personal digital assistants (Personal Digital Assistant, PDA), laptop computers, portable multimedia players (Portable Multimedia Player, PMP), smart phones, etc. The AP may be coupled to a network, such as the internet, and may enable the mobile device to communicate via the network (or with other devices coupled to the AP). The wireless device may be in two-way communication with the network device. For example, in a WLAN, STAs may communicate with an associated AP via the downlink and uplink. The downlink may refer to a communication link from the AP to the STA and the uplink may refer to a communication link from the STA to the AP.

IEEE 802.11TGbe is developing a new IEEE 802.11 amendment that defines an extremely high throughput (Extremely High Throughput, EHT) PHYsical layer (PHY) and a medium access control (Medium Access Control, MAC) layer capable of supporting a maximum throughput of at least 30 gigabits per second (Gbps). For this reason, it is proposed to increase the maximum channel bandwidth to 320MHz and support up to 16 spatial streams. However, efficient changing of Operation Mode (OM) in IEEE 802.11be EHT WLAN remains an open problem.

Accordingly, there is a need for an Access Point (AP), a Station (STA), and a wireless communication method that can solve the problems in the prior art, efficiently change OM, provide good communication performance, and/or provide high reliability.

Disclosure of Invention

It is an object of the present invention to propose an Access Point (AP), a Station (STA) and a wireless communication method which are capable of solving the problems in the prior art, efficiently changing OM, providing good communication performance and/or providing high reliability.

According to a first aspect of the present invention, a wireless communication method includes: the station STA determines operation mode information including: when transmitting or receiving an extremely high throughput EHT physical layer protocol data unit PPDU, the maximum number of spatial streams NSS supported by the STA; and the STA determines a maximum NSS based on the operating channel width of the STA and the bandwidth BW of the EHT PPDU.

According to a second aspect of the present invention, a wireless communication method includes: the access point AP determines operation mode information including: when transmitting or receiving an extremely high throughput EHT physical layer protocol data unit PPDU, the AP supports a maximum number of spatial streams NSS; and the AP determines a maximum NSS based on the operation channel width of the AP and the bandwidth BW of the EHT PPDU.

According to a third aspect of the present invention, a station STA includes: a memory, a transceiver, and a processor coupled to the memory and the transceiver. The processor is configured to determine operation mode information, the operation mode information comprising: when transmitting or receiving an extremely high throughput EHT physical layer protocol data unit PPDU, the maximum number of spatial streams NSS supported by the STA; and determining a maximum NSS based on the operating channel width of the STA and the bandwidth BW of the EHT PPDU.

According to a fourth aspect of the invention, an access point, AP, comprises: a memory, a transceiver, and a processor coupled to the memory and the transceiver. The processor is configured to determine operation mode information, the operation mode information comprising: when transmitting or receiving an extremely high throughput EHT physical layer protocol data unit PPDU, the maximum number of spatial streams NSS supported by the AP; and determining a maximum NSS based on the operating channel width of the AP and the bandwidth BW of the EHT PPDU.

According to a fifth aspect of the invention, a non-transitory machine-readable storage medium has stored thereon instructions which, when executed by a computer, cause the computer to perform a method according to the preceding description.

According to a sixth aspect of the present invention, a chip includes: and a processor for calling and running a computer program stored in the memory, so that the device on which the chip is mounted performs the method according to the foregoing.

According to a seventh aspect of the present invention, a computer-readable storage medium stores a computer program that causes a computer to execute the method according to the foregoing.

According to an eighth aspect of the invention, a computer program product comprising a computer program, wherein the computer program causes a computer to perform the method according to the preceding description.

According to a ninth aspect of the present invention, a computer program, wherein the computer program causes a computer to perform the method according to the preceding.

Drawings

In order to more clearly illustrate the embodiments of the present invention or related art, the following drawings will be described in brief introduction to the embodiments. It is evident that these drawings are only some embodiments of the present invention, from which a person of ordinary skill in the art can obtain other drawings without inventive effort.

Fig. 1 is a schematic diagram showing an example of a wireless communication system according to an embodiment of the present invention.

Fig. 2 is a block diagram of communication of one or more Stations (STAs) and an Access Point (AP) in a wireless communication system according to an embodiment of the present invention.

Fig. 3 is a flowchart illustrating a wireless communication method performed by an AP according to an embodiment of the present invention.

Fig. 4 is a flowchart illustrating a wireless communication method performed by a STA according to another embodiment of the present invention.

Fig. 5A is a diagram illustrating an example format of a supported EHT-MCS and NSS set field according to an embodiment of the present invention.

Fig. 5B is a diagram illustrating an example format of an EHT-MCS map according to an embodiment of the present invention.

Fig. 6A is a schematic diagram showing an example format of an operation mode notification element according to the first embodiment of the present invention.

Fig. 6B is a diagram showing an example format of an operation mode field according to the first embodiment of the present invention.

Fig. 6C is a schematic diagram showing an example format of an EHT operation mode field according to the first embodiment of the present invention.

Fig. 7A is a schematic diagram showing an example format of an EHT operation mode notification element according to a second embodiment of the present invention.

Fig. 7B is a schematic diagram showing an example format of an EHT operation mode field according to a second embodiment of the present invention.

Fig. 8A is a schematic diagram showing an example format of a High Efficiency (HE) variant (variable) High Throughput (HT) control field according to a third embodiment of the present invention.

Fig. 8B is a diagram illustrating an exemplary format of a control information field in an OM control subfield according to a third embodiment of the present invention.

Fig. 8C is a diagram showing an exemplary format of a control information field in an EHT OM control subfield according to a third embodiment of the present invention.

Fig. 9 is a block diagram of a wireless communication system according to an embodiment of the present invention.

Detailed Description

Technical contents, structural features, achievement objects, and technical effects of the embodiments of the present invention are described in detail with reference to the following drawings. In particular, the terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

The following table includes some abbreviations that may be used in some embodiments of the invention:

for the purposes of describing innovative aspects of the present invention, the following description will be directed to certain embodiments. However, one of ordinary skill in the art will readily recognize that the teachings herein may be applied in a variety of different ways. The described embodiments may be implemented in any device, system, or network capable of transmitting and receiving Radio Frequency (RF) signals according to any of the following techniques: IEEE 802.11 standard, Standard, code division multiple access (Code Division Multiple Access, CDMA), frequency division multiple access (Frequency Division Multiple Access, FDMA), time division multiple access (Time Division Multiple Access, TDMA), global system for mobile communications (Global System for Mobile communication, GSM), GSM/general packet RAdio service (General Packet Radio Service, GPRS), enhanced data GSM environment (Enhanced Data GSM Environment, EDGE), terrestrial trunked RAdio (TErrestrial Trunked RAdio, TETRA), wideband CDMA (Wideband-CDMA, W-CDMA), evolved data optimization (EVolution Data Optimized, EV-DO), 1 xev-DO, EV-DO Rev a, EV-DO Rev B, high speed packet access (High Speed Packet Access, HSPA), high speed downlink packet access (High Speed Downlink Packet Access, HSDPA), high speed uplink packet access (High Speed Uplink Packet Access, HSUPA), evolved high speed packet access (Evolved High Speed Packet Access, hspa+), long term evolution (Long Term Evolution, LTE), AMPS, or other known signals for communication in a wireless network, cellular network or internet of things (Internet Of Thing, IOT), such as systems utilizing 3G, 4G, or 5G, or further implementations and techniques thereof.

Fig. 1 shows an example of a wireless communication system according to an embodiment of the present invention. The wireless communication system may be an example of a Wireless Local Area Network (WLAN) 100 (also referred to as a Wi-Fi network) configured in accordance with aspects of the present invention, such as a Next generation network, next Big-hand (NBT), ultra-High Throughput (UHT), or EHT Wi-Fi network. As described herein, the terms next generation, NBT, UHT, and EHT may be considered synonymous and may each correspond to a Wi-Fi network supporting high capacity space-time streams. WLAN 100 may include an AP 10 and a plurality of associated STAs 20, STA 20 may be represented as devices such as: mobile stations, personal Digital Assistants (PDAs), other handheld devices, netbooks, notebooks, tablets, laptops, display devices (e.g., TVs, computer monitors, etc.), printers, etc. The AP 10 and associated stations 20 may represent a basic service set (Basic Service Set, BSS) or an extended service set (Extended Service Set, ESS). Various STAs 20 in the network may communicate with each other through the AP 10. Fig. 1 also shows a coverage area 110 of the AP 10, which may represent a basic service area (Basic Service Area, BSA) of the WLAN 100. An extended network station (not shown) associated with WLAN 100 may be connected to a wired distribution system or a wireless distribution system that allows multiple APs 10 to be connected in an ESS.

In some embodiments, STA20 may be located at the intersection of more than one coverage area 110 and may be associated with more than one AP 10. A single AP 10 and a group of associated STAs 20 may be referred to as a BSS. The ESS is a set of connected BSSs. A distribution system (not shown) may be used to connect the APs 10 in the ESS. In some cases, coverage area 110 of AP 10 may be divided into sectors (also not shown). WLAN 100 may include different types of APs 10 (e.g., metropolitan area networks, home networks, etc.) having different and overlapping coverage areas 110. Two STAs 20 may also communicate directly via the direct wireless link 125 whether or not the two STAs 20 are located in the same coverage area 110. Examples of direct wireless link 120 may include: wi-Fi direct connection, wi-Fi channel direct link setup (Tunneled Direct Link Setup, TDLS) link, and other group connections. STA20 and AP 10 may communicate according to WLAN radio and baseband protocols of the physical layer and Medium Access Control (MAC) layer of IEEE 802.11; versions of IEEE 802.11 include, but are not limited to: 802.11b, 802.11g, 802.11a, 802.11n, 802.11ac, 802.11ad, 802.11ah, 802.11ax, 802.11ay, etc. In some other embodiments, a point-to-point connection or an ad hoc network may be implemented in the WLAN 100.

Fig. 2 illustrates communication of one or more Stations (STAs) 20 and an Access Point (AP) 10 in a wireless communication system 700 in accordance with an embodiment of the present invention. Fig. 2 illustrates a wireless communication system 700 including an Access Point (AP) 10 and one or more Stations (STAs) 20. The AP 10 may include: a memory 12, a transceiver 13, and a processor 11 coupled to the memory 12 and the transceiver 13. The one or more STAs 20 may include: a memory 22, a transceiver 23, and a processor 21 coupled to the memory 22 and the transceiver 23. The processor 11 or 21 may be configured to implement the proposed functions, processes and/or methods described in the present specification. Layers of the radio interface protocol may be implemented in the processor 11 or 21. The memory 12 or 22 is operatively coupled to the processor 11 or 21, and the memory 12 or 22 stores various information to operate the processor 11 or 21. The transceiver 13 or 23 is operatively coupled to the processor 11 or 21 and the transceiver 13 or 23 will transmit and/or receive radio signals.

The processor 11 or 21 may include: application-specific integrated circuits (ASICs), other chipsets, logic circuits, and/or data processing devices. The memory 12 or 22 may include: read-Only Memory (ROM), random access Memory (Random Access Memory, RAM), flash Memory, memory cards, storage media, and/or other storage devices. The transceiver 13 or 23 may include baseband circuitry to process radio frequency signals. When the embodiments are implemented in software, the techniques described herein may be implemented with modules (e.g., procedures, functions, and so on) that perform the functions described herein. The modules may be stored in the memory 12 or 22 and executed by the processor 11 or 21. The memory 12 or 22 may be implemented within the processor 11 or 21 or external to the processor 11 or 21; in the case of implementation external to the processor 11 or 21, the memory 12 or 22 may be communicatively coupled to the processor 11 or 21 via various means as is known in the art.

In some embodiments, the processor 11 is configured to: determining operation mode information, the operation mode information including: the AP supports the maximum number of spatial streams (Number of Spatial Stream, NSS) transmitted or received in an extremely high throughput (Extremely High Throughput, EHT) physical layer protocol data unit (Physical Layer Protocol Data Unit, PPDU); and, the processor 11 is further configured to: the maximum NSS is determined based on the operation channel width of the AP and the BandWidth (BW) of the EHT PPDU. In some embodiments, an AP refers to a stand-alone AP or an AP affiliated with an AP MLD, and a non-AP STA refers to a stand-alone non-AP STA or a non-AP STA affiliated with a non-AP MLD. This can solve the problems of the prior art, change OM efficiently, provide good communication performance, and/or provide high reliability.

In some embodiments, the processor 21 is configured to: determining operation mode information, the operation mode information including: in an Extremely High Throughput (EHT) physical layer protocol data unit (PPDU), the STA supports a maximum spatial stream Number (NSS) transmitted or received; and, the processor 21 is further configured to: the maximum NSS is determined based on the operating channel width of the STA and the Bandwidth (BW) of the EHT PPDU. This can solve the problems of the prior art, change OM efficiently, provide good communication performance, and/or provide high reliability.

Fig. 3 illustrates a wireless communication method 800 performed by an AP in accordance with an embodiment of the present invention. In some embodiments, the method 800 includes: at operation 802, an Access Point (AP) determines operating mode information comprising: the AP supports a maximum Number of Spatial Streams (NSS) transmitted or received in an Extremely High Throughput (EHT) physical layer protocol data unit (PPDU); and, at operation 804, the AP determines the maximum NSS based on an operation channel width of the AP and a Bandwidth (BW) of the EHT PPDU. In some embodiments, an AP refers to a single AP or an AP affiliated with an AP MLD, and a non-AP STA refers to a single non-AP STA or a non-AP STA affiliated with a non-AP MLD. This can solve the problems of the prior art, change OM efficiently, provide good communication performance, and/or provide high reliability.

Fig. 4 illustrates a wireless communication method 900 performed by a STA in accordance with an embodiment of the present invention. In some embodiments, method 900 includes: at operation 902, a Station (STA) determines operation mode information including: a maximum Number of Spatial Streams (NSS) supported by the STA when transmitting or receiving an Extremely High Throughput (EHT) physical layer protocol data unit (PPDU); and, at operation 904, the STA determines the maximum NSS based on an operation channel width of the STA and a Bandwidth (BW) of the EHT PPDU. This can solve the problems of the prior art, change OM efficiently, provide good communication performance, and/or provide high reliability.

In accordance with the present invention, once the STA establishes an association with the AP, both the STA and the AP have determined and exchanged respective initial operation mode information (e.g., operation channel width, maximum number of spatial streams supported in reception and/or transmission). Thereafter, the STA (or AP) may change its operation mode for some purpose (e.g., power saving) and inform the AP (or STA) of the change of its operation mode through the MAC frame.

According to the present invention, the STA may transmit the EHT capability element in a probe request frame, an association request frame, or a reassociation request frame. The AP may transmit the EHT capability element in a beacon frame, a probe response frame, an association response frame, or a reassociation response frame. The EHT capability element includes Supported EHT-MCS And NSS Set fields indicating a combination of EHT-MCS 0 through EHT-MCS13 And spatial stream NSS at the time of reception Supported by the STA And a combination of transmission Supported by the STA. An example format of the supported EHT-MCS and NSS set fields is shown in FIG. 5A.

If the operating channel width of the STA is greater than or equal to 80MHz, then the EHT-MCS mapping (BW.ltoreq.80 MHz except for the STA of only 20 MHz) subfield indicates: in an EHT PPDU having a BW of 20MHz, 40MHz or 80MHz, for each EHT-MCS value, the maximum number of spatial streams at reception supported by the STA and the maximum number of spatial streams that the STA can transmit. If the operating channel width of the STA is greater than or equal to 160MHz, the EHT-MCS mapping (bw=160 MHz) subfield indicates: in an EHT PPDU with BW of 160MHz, for each EHT-MCS value, the maximum number of spatial streams at reception supported by the STA and the maximum number of spatial streams that the STA can transmit. If the operating channel width of the STA is equal to 320MHz, the EHT-MCS mapping (bw=320 MHz) subfield indicates: in an EHT PPDU with a BW of 320MHz, for each EHT-MCS value, the maximum number of spatial streams at reception supported by the STA and the maximum number of spatial streams that the STA can transmit. The EHT-MCS mapping (bw+.80 MHz, except for STAs of only 20 MHz), EHT-MCS mapping (bw=160 MHz), and EHT-MCS mapping (bw=320 MHz) subfields have an example format as shown in fig. 5B.

First embodiment

According to the first embodiment, the operation mode information may be carried in an operation mode notification frame or an operation mode notification element contained in one MAC frame (e.g., an association request frame or a re-association request frame).

According to a first embodiment, an example format of the operation mode notification element is shown in fig. 6A.

The operation mode notification frame is a VHT action frame. According to the first embodiment, the action field of the operation mode notification frame contains information as shown in table 1:

TABLE 1

Sequence number	Information processing system
		1	Category(s)
2	VHT actions
		3	Mode of operation
4	EHT operation mode

As shown in fig. 6A and table 1, an operation mode field and an EHT operation mode field exist in the operation mode notification frame and the operation mode notification element. Fig. 6B and 6C show the operation mode field and the EHT operation mode field, respectively.

According to the first embodiment, if the subfield of the Rx NSS type is 0, the channel width subfield of the operation mode field indicates the operation channel width at the time of reception and at the time of transmission supported by the STA together with the 160/80+80bw subfield of the operation mode field and the 320BW subfield of the EHT operation mode field. Example encodings of the channel width subfield with the 160/80+80BW subfield and the 320BW subfield are described in Table 2.

TABLE 2

Channel width subfield	160/80+80BW subfield	320BW subfield	Indication of operating channel width
				0	0	0	Main 20MHz
1	0	0	Main 40MHz
				2	0	0	Main 80MHz
2	1	0	Main 160MHz
				2	0	1	320MHz

According to the first embodiment, if the Rx NSS type subfield is 0 and the operation channel width supported by the STA is less than or equal to 80MHz, the Rx NSS extension (bw+.80 MHz) subfield of the EHT operation mode field and the Rx NSS (bw+.80 MHz) subfield of the operation mode field together indicate: upon receiving an EHT PPDU having BW less than or equal to an operation channel width supported by the STA, the maximum number of spatial streams N supported by the STA _SS And is set to N _SS -1; wherein the Rx NSS extension (BW.ltoreq.80 MHz) subfield provides N _SS Most significant bits (Most Significant Bit, MSB) of (B), and Rx NSS (BW. Ltoreq.80 MHz) subfield provides N _SS Is the least significant bit (Least Significant Bit, LSB). In this case, the Rx NSS (bw=160 MHz) subfield and the Rx NSS (bw=320 MHz) subfield of the EHT operation mode field will be reserved.

According to the first embodiment, if the Rx NSS type subfield is 0 and the operation channel width supported by the STA is greater than 80MHz, the Rx NSS extension (BW. Ltoreq.80 MHz) subfield of the EHT operation mode field and the Rx NSS (BW. Ltoreq.80 MHz) subfield of the operation mode field together indicate: upon receiving EHT PPDUs with BW of 20MHz, 40MHz and 80MHz, the maximum number of spatial streams N supported by the STA _SS And is set to N _SS -1; wherein the Rx NSS extension (BW.ltoreq.80 MHz) subfield provides N _SS And Rx NSS (BW.ltoreq.80 MHz) subfield provides N _SS Is included in the three LSBs of (a). The Rx NSS (bw=160 MHz) subfield of the EHT operation mode field indicates: at the position ofWhen receiving an EHT PPDU with BW of 160MHz, the maximum number of spatial streams N supported by the STA _SS And is set to N _SS -1. If the Rx NSS type subfield is 0 and the operating channel width supported by the STA is 160MHz, the Rx NSS (bw=320 MHz) subfield of the EHT operating mode field will be reserved. If the Rx NSS type subfield is 0 and the operation channel width supported by the STA is 320MHz, the Rx NSS (bw=320 MHz) subfield of the EHT operation mode field indicates: upon receiving an EHT PPDU with BW of 320MHz, the maximum number of spatial streams N supported by the STA _SS And is set to N _SS -1。

According to a first embodiment, if the operating channel width supported by the STA is less than or equal to 80MHz, the Tx NSS (bw+.80 MHz) subfield of the EHT operating mode field indicates: when an EHT PPDU having BW less than or equal to the operation channel width supported by the STA is transmitted, the maximum spatial stream NSS supported by the STA is set to NSS-1. In this case, the Tx NSS (bw=160 MHz) subfield and the Tx NSS (bw=320 MHz) subfield of the EHT operation mode field will be reserved.

According to a first embodiment, if the operating channel width supported by the STA is greater than 80MHz, the Tx NSS (bw+.80 MHz) subfield of the EHT operating mode field indicates: when an EHT PPDU with BW of 20MHz, 40MHz or 80MHz is transmitted, the maximum number of spatial streams N supported by the STA _SS And is set to N _SS -1. The Tx NSS (bw=160 MHz) subfield of the EHT operation mode field indicates: when an EHT PPDU with BW of 160MHz is transmitted, the maximum number of spatial streams N supported by the STA _SS And is set to N _SS -1. If the operating channel width supported by the STA is 160MHz, the Tx NSS (bw=320 MHz) subfield of the EHT operation mode field will be reserved. If the operating channel width supported by the STA is 320MHz, the Tx NSS (bw=320 MHz) subfield of the EHT operation mode field indicates: when an EHT PPDU with BW of 320MHz is transmitted, the maximum number of spatial streams N supported by the STA _SS And is set to N _SS -1。

According to a first embodiment, the allowed UL MU operation and the allowed frame types that may be transmitted as a response to the trigger frame are determined by the UL MU disable subfield and the UL MU data disable subfield. For example, if both the UL MU disable subfield and the UL MU data disable subfield are set to 0, the STA enables all trigger-based UL MU transmissions. If the UL MU disable subfield is set to 1 and the UL MU data disable subfield is set to 0, the STA suspends all trigger-based UL MU transmissions; and the STA will no longer respond to the received trigger frame. If the UL MU disable subfield is set to 0 and the UL MU data disable subfield is set to 1, the STA may suspend responding to the basic trigger frame with trigger-based UL MU data frame transmission; but the STA may still enable other trigger-based UL MU transmissions.

According to a first embodiment, the STA sets the DL MU-MIMO re-measurement recommendation (Resound Recommendation) subfield to 1 to instruct the STA to suggest that the AP re-measure the channel or increase the channel sounding frequency together with the STA. The subfield is set to 0 to indicate that the STA has no proposal about the AP channel sounding frequency.

According to the first embodiment, if the AP transmits an operation mode notification frame or an operation mode notification element, a reserved Tx NSS (bw+.80 MHz) subfield, a Tx NSS (bw=160 MHz) subfield, a Tx NSS (bw=320 MHz) subfield, a DL MU-MIMO re-measurement recommendation subfield, a UL MU disable subfield, and a UL MU data disable subfield are reserved.

Second embodiment

According to the second embodiment, the operation mode information may be carried in an EHT operation mode notification frame or an EHT operation mode notification element contained in one MAC frame (e.g., an association request frame or a reassociation request frame). Fig. 7A shows an example format of an EHT operation mode notification element according to the second embodiment.

The EHT operation mode notification frame is an EHT action frame. According to a second embodiment, the action field of the EHT operation mode notification frame contains information as shown in table 3:

TABLE 3 Table 3

Sequence number	Information processing system
		1	Category(s)
2	EHT actions
		3	EHT operation mode

As shown in fig. 7A and table 3, the EHT operation mode field exists in the EHT operation mode notification frame and the EHT operation mode notification element. Fig. 7B shows an example format of an EHT operation mode field according to the second embodiment.

According to a second embodiment, the channel width subfield of the EHT operation mode field indicates the operation channel width at reception and at transmission supported by the STA. An example encoding of the channel width subfield according to the second embodiment is described in table 4.

TABLE 4 Table 4

According to a second embodiment, if the operating channel width supported by the STA is less than or equal to 80MHz, the Rx NSS (bw+.80 MHz) subfield of the EHT operating mode field indicates: upon receiving an EHT PPDU having BW less than or equal to an operation channel width supported by the STA, the maximum number of spatial streams N supported by the STA _SS And is set to N _SS -1. In this case, the Rx NSS (bw=160 MHz) and Rx NSS (bw=320 MHz) subfields of the EHT operation mode field will be usedAnd (5) reserving.

According to a second embodiment, if the operating channel width supported by the STA is greater than 80MHz, the Rx NSS (bw+.80 MHz) subfield of the EHT operating mode field indicates: upon receiving an EHT PPDU having a BW of 20MHz, 40MHz or 80MHz, the maximum number of spatial streams N supported by the STA _SS And is set to N _SS -1. The Rx NSS (bw=160 MHz) subfield of the EHT operation mode field indicates: upon receiving an EHT PPDU with a BW of 160MHz, the maximum number of spatial streams N supported by the STA _SS And is set to N _SS -1. If the operating channel width supported by the STA is 160MHz, the Rx NSS (bw=320 MHz) subfield of the EHT operation mode field will be reserved. If the operating channel width supported by the STA is 320MHz, the Rx NSS (bw=320 MHz) subfield of the EHT operating mode field indicates: upon receiving an EHT PPDU with BW of 320MHz, the maximum number of spatial streams N supported by the STA _SS And is set to NSS-1.

According to a second embodiment, if the operating channel width supported by the STA is less than or equal to 80MHz, the Tx NSS (bw+.80 MHz) subfield of the EHT operating mode field indicates: when an EHT PPDU with BW less than or equal to the operation channel width supported by the STA is transmitted, the maximum number of spatial streams N supported by the STA _SS And is set to N _SS -1. In this case, the Tx NSS (bw=160 MHz) subfield and the Tx NSS (bw=320 MHz) subfield of the EHT operation mode field will be reserved.

According to a second embodiment, if the operating channel width supported by the STA is greater than 80MHz, the Tx NSS (bw+.80 MHz) subfield of the EHT operating mode field indicates: when an EHT PPDU with BW of 20MHz, 40MHz or 80MHz is transmitted, the maximum number of spatial streams N supported by the STA _SS And is set to N _SS -1. The Tx NSS (bw=160 MHz) subfield of the EHT operation mode field indicates: when an EHT PPDU with BW of 160MHz is transmitted, the maximum number of spatial streams N supported by the STA _SS And is set to N _SS -1. If the operating channel width supported by the STA is 160MHz, the Tx NSS (bw=320 MHz) subfield of the EHT operation mode field will be reserved. If the operating channel width supported by the STA is 320MHz, the Tx NSS (bw=320 MHz) subfield of the EHT operation mode field indicates: hair-on-hairMaximum number of spatial streams N supported by STA when sending EHT PPDU with BW of 320MHz _SS And is set to N _SS -1。

According to a second embodiment, the allowed UL MU operation and the allowed frame type that may be transmitted as a response to the trigger frame are determined by the UL MU disable subfield and the UL MU data disable subfield. For example, if both the UL MU disable subfield and the UL MU data disable subfield are set to 0, the STA enables all trigger-based UL MU transmissions. If the UL MU disable subfield is set to 1 and the UL MU data disable subfield is set to 0, the STA suspends all trigger-based UL MU transmissions; and the STA will no longer respond to the received trigger frame. If the UL MU disable subfield is set to 0 and the UL MU data disable subfield is set to 1, the STA may suspend responding to the basic trigger frame with trigger-based UL MU data frame transmission; but the STA may still enable other trigger-based UL MU transmissions.

According to a second embodiment, the STA sets the DL MU-MIMO re-measurement recommendation subfield to 1 to instruct the STA to recommend that the AP re-measure the channel or increase the channel sounding frequency together with the STA. The subfield is set to 0 to indicate that the STA has no proposal about the AP channel sounding frequency.

According to the second embodiment, if the AP transmits an EHT operation mode notification frame or an EHT operation mode notification element, the reserved Tx NSS (bw+.80 MHz) subfield, the Tx NSS (bw=160 MHz) subfield, the Tx NSS (bw=320 MHz) subfield, the DL MU-MIMO re-measurement recommendation subfield, the UL MU disable subfield, and the UL MU data disable subfield.

Third embodiment

According to a third embodiment, the operation mode information may be carried in the HE variant HT control field of the data frame or the management frame. The HE variant HT Control field includes an a-Control (a-Control) subfield. The a-control subfields may include an OM control subfield and an EHT OM control subfield. Fig. 8A illustrates an example format of the HE variant HT control field, in which both bit B0 and bit B1 are set to 1 to indicate the HE variant HT control field. The OM control subfield includes a 4-bit control ID field (which is set to 1) and a 12-bit control information field; and, the EHT OM control subfield includes a 4-bit control ID field (which is set to 7) and a 6-bit control information field. Fig. 8B and 8C show an example format of the control information field in the OM control subfield and an example format of the control information field in the EHT OM control subfield, respectively.

The channel width extension subfield of the EHT OM control subfield indicates together with the channel width subfield of the OM control subfield: operating channel width at reception and at transmission supported by STA. Example encodings of the channel width subfield and the channel width extension subfield are described in table 5.

TABLE 5

According to a third embodiment, if the operating channel width of the STA is less than or equal to 80MHz, the Rx NSS extension subfield in the EHT OM control subfield indicates together with the Rx NSS subfield in the OM control subfield: upon receiving an EHT PPDU having BW less than or equal to the operation channel width of the STA, the maximum number of spatial streams N supported by the STA _SS And is set to N _SS -1; wherein the Rx NSS extension subfield provides N _SS And the Rx NSS subfield provides N _SS Is included in the three LSBs of (a).

According to a third embodiment, if the operation channel width of the STA is 160MHz, the Rx NSS extension subfield in the EHT OM control subfield indicates together with the Rx NSS subfield in the OM control subfield: upon receiving an EHT PPDU having BW less than or equal to 80MHz, the maximum number of spatial streams N supported by the STA _SS And is set to N _SS -1; wherein the Rx NSS extension subfield provides N _SS And the Rx NSS subfield provides N _SS Is included in the three LSBs of (a).

According to the third embodiment, if the operation channel width of the STA is 160MHz, the maximum number of spatial streams supported by the STA when receiving the EHT PPDU having a BW of 160MHz is determined according to equation (1).

floor(Rx-NSS-from-OMI×(Max-EHT-Rx-NSS-at-160/Max-EHT-Rx-NSS-at-80))(1)

Wherein Rx-NSS-from-OMI is Rx NSS value derived from EHT OM control subfield and OM control subfield; and, max-EHT-Rx-NSS-at-80 and Max-EHT-Rx-NSS-at-160 are maximum received N of supported EHT-MCS and NSS set fields transmitted for STAs corresponding to all EHT-MCS values at 80MHz and 160MHz _SS As shown in fig. 5A and 5B, respectively.

According to a third embodiment, if the operating channel width of the STA is less than or equal to 80MHz, the Tx NSTS extension subfield in the EHT OM control subfield indicates together with the Tx NSTS subfield in the OM control subfield: when an EHT PPDU having BW less than or equal to the operation channel width of the STA is transmitted, the maximum space-time stream NSTS supported by the STA is set to N _STS -1; wherein the Tx NSTS extension subfield provides N _STS And Tx NSTS subfield provides N _STS Is included in the three LSBs of (a). It should be noted that the EHT PPDU does not support STBC, and thus the maximum space-time stream number N at the time of transmission supported by the STA _STS Equal to the maximum number of spatial streams N of transmissions supported by the STA _SS 。

According to a third embodiment, if the operating channel width of the STA is 160MHz, the Tx NSTS extension subfield in the EHT OM control subfield indicates together with the Tx NSTS subfield in the OM control subfield: when an EHT PPDU with BW less than or equal to 80MHz is transmitted, the maximum space-time stream number N supported by the STA _STS And is set to N _STS -1; wherein the Tx NSTS extension subfield provides N _STS The MSB, tx NSTS subfield provides N _STS Is included in the three LSBs of (a). As described above, the EHT PPDU does not support STBC, and thus the maximum space-time stream number N at the time of transmission supported by the STA _STS Equal to the maximum number of spatial streams N of transmissions supported by the STA _SS 。

According to the third embodiment, if the operation channel width of the STA is 160MHz, the maximum number of spatial streams supported by the STA when the EHT PPDU having BW of 160MHz is transmitted is determined according to equation (2).

floor(Tx-NSTS-from-OMI×(Max-EHT-Tx-NSS-at-160/Max-EHT-Tx-NSS-at-80))(2)

Wherein Tx-NSTS-from-OMI is pushed from EHT OM control subfield and OM control subfieldDerived Tx NSTS value; and Max-EHT-Tx-NSS-at-80 and Max-EHT-Tx-NSS-at-160 are the maximum transmission N of the supported EHT-MCS and NSS set fields at 80MHz and 160MHz, respectively, for all EHT-MCS values transmitted by the STA _SS As shown in fig. 5A and 5B.

According to the third embodiment, if the operation channel width of the STA is 320MHz, there is an option for determining the maximum spatial stream number at the time of transmission or at the time of reception supported by the STA.

First option

According to a first option, if the operating channel width of the STA is 320MHz, the Rx NSS extension subfield in the EHT OM control subfield indicates together with the Rx NSS subfield in the OM control subfield: upon receiving an EHT PPDU having BW less than or equal to 80MHz, the maximum number of spatial streams N supported by the STA _SS And is set to N _SS -1; wherein the Rx NSS extension subfield provides N _SS And the Rx NSS subfield provides N _SS Is included in the three LSBs of (a).

According to the first option, if the operation channel width of the STA is 320MHz, determining the maximum number of spatial streams supported by the STA when receiving the EHT PPDU having a BW of 160MHz according to equation (1); and, the maximum number of spatial streams supported by the STA when receiving the EHT PPDU having BW of 320MHz is determined according to equation (3).

floor(Rx-NSS-from-OMI×(Max-EHT-Rx-NSS-at-320/Max-EHT-Rx-NSS-at-80))(3)

Wherein Max-EHT-Rx-NSS-at-320 is the maximum received N for all EHT-MCS values at 320MHz of the supported EHT-MCS and NSS set fields transmitted by the STA _SS As shown in fig. 5A and 5B.

According to a first option, if the operating channel width of the STA is 320MHz, the Tx NSTS extension subfield in the EHT OM control subfield indicates together with the Tx NSTS subfield in the OM control subfield: when an EHT PPDU with BW less than or equal to 80MHz is transmitted, the maximum space-time stream number N supported by the STA _STS And is set to N _STS -1; wherein the Tx NSTS extension subfield provides N _SS The MSB, tx NSTS subfield provides N _STS Is included in the three LSBs of (a). As described above, the EHT PPDU does not support STBC, and thusMaximum space-time stream number N at transmission supported by STA _STS Equal to the maximum number of spatial streams N of transmissions supported by the STA _SS 。

According to the first option, if the operation channel width of the STA is 320MHz, determining the maximum number of spatial streams supported by the STA when transmitting the EHT PPDU having a BW of 160MHz according to equation (2); and, the maximum number of spatial streams supported by the STA when the EHT PPDU having BW of 320MHz is transmitted is determined according to equation (4).

floor(Tx-NSTS-from-OMI×(Max-EHT-Tx-NSS-at-320/Max-EHT-Tx-NSS-at-80))(4)

Wherein Max-EHT-Tx-NSS-at-320 is the maximum transmit N of the supported EHT-MCS and NSS set fields transmitted by the STA corresponding to all EHT-MCS values at 320MHz _SS As shown in fig. 5A and 5B.

Second option

According to a second option, if the operating channel width of the STA is 320MHz, the Rx NSS extension subfield in the EHT OM control subfield indicates together with the Rx NSS subfield in the OM control subfield: upon receiving an EHT PPDU having BW less than or equal to 80MHz, the maximum number of spatial streams N supported by the STA _SS And is set to N _SS -1; wherein the Rx NSS extension subfield provides N _SS Is provided N by the MSB, rx NSS subfield _SS Is included in the three LSBs of (a).

According to the second option, if the operation channel width of the STA is 320MHz, determining the maximum number of spatial streams supported by the STA when receiving the EHT PPDU having a BW of 160MHz according to equation (1); and, the maximum number of spatial streams supported by the STA when receiving the EHT PPDU having BW of 320MHz is determined according to equation (5).

floor(Rx-NSS-at-160×(Max-EHT-Rx-NSS-at-320/Max-EHT-Rx-NSS-at-160))(5)

Wherein, rx-NSS-at-160 is the maximum spatial stream number supported by the STA when receiving the EHT PPDU with BW of 160MHz, which is determined according to equation (1).

According to a second option, if the operating channel width of the STA is 320MHz, the Tx NSTS extension subfield in the EHT OM control subfield indicates together with the Tx NSTS subfield in the OM control subfield: e with BW less than or equal to 80MHzIn HT PPDU, the maximum space-time stream number N supported by STA _STS And is set to NSTS-1; wherein the Tx NSTS extension subfield provides N _STS The MSB, tx NSTS subfield provides N _STS Is included in the three LSBs of (a). As described above, the EHT PPDU does not support STBC, and thus the maximum space-time stream number N at the time of transmission supported by the STA _STS Equal to the maximum number of spatial streams N of transmissions supported by the STA _SS 。

According to the second option, if the operation channel width of the STA is 320MHz, determining the maximum number of spatial streams supported by the STA when transmitting the EHT PPDU having a BW of 160MHz according to equation (2); and determines the maximum number of spatial streams supported by the STA when the EHT PPDU having BW of 320MHz is transmitted according to equation (6).

floor(Tx-NSS-at-160×(Max-EHT-Tx-NSS-at-320/Max-EHT-Tx-NSS-at-160))(6)

Where Tx-NSS-at-160 is the maximum number of spatial streams supported by the STA when transmitting the EHT PPDU with BW of 160MHz, which is determined according to equation (2).

Third option

According to a third option, if the operating channel width of the STA is 320MHz, the Rx NSS extension subfield in the EHT OM control subfield indicates together with the Rx NSS subfield in the OM control subfield: upon receiving an EHT PPDU with a BW of 160MHz, the maximum number of spatial streams N supported by the STA _SS And is set to N _SS -1; wherein the Rx NSS extension subfield provides N _SS Is provided N by the MSB, rx NSS subfield _SS Is included in the three LSBs of (a).

According to the third option, if the operation channel width of the STA is 320MHz, the maximum number of spatial streams supported by the STA when receiving the EHT PPDU having BW of 320MHz is determined according to equation (7).

floor(Rx-NSS-from-OMI×(Max-EHT-Rx-NSS-at-320/Max-EHT-Rx-NSS-at-160))(7)

The maximum number of spatial streams supported by the STA when receiving the EHT PPDU having BW equal to or less than 80MHz is determined according to equation (8).

floor(Rx-NSS-from-OMI×(Max-EHT-Rx-NSS-at-80/Max-EHT-Rx-NSS-at-160))(8)

According to a third option, if the operation of the STAFor a channel width of 320MHz, the Tx NSTS extension subfield in the EHT OM control subfield indicates with the Tx NSTS subfield in the OM control subfield: when an EHT PPDU with BW of 160MHz is transmitted, the maximum space-time stream number N supported by the STA _STS The method comprises the steps of carrying out a first treatment on the surface of the Wherein the Tx NSTS extension subfield provides N _STS The MSB, tx NSTS subfield provides N _STS Is a single LSB of the sequence; and is set to N _STS -1. As described above, the EHT PPDU does not support STBC, and thus the maximum space-time stream number N at the time of transmission supported by the STA _STS Equal to the maximum number of spatial streams N of transmissions supported by the STA _SS 。

According to the third option, if the operation channel width of the STA is 320MHz, the maximum number of spatial streams supported by the STA when the EHT PPDU having BW of 320MHz is transmitted is determined according to equation (9).

floor(Tx-NSTS-from-OMI×(Max-EHT-Tx-NSS-at-320/Max-EHT-Tx-NSS-at-160))(9)

The maximum number of spatial streams supported by the STA when the EHT PPDU having BW equal to or less than 80MHz is transmitted is determined according to equation (10).

floor(Tx-NSTS-from-OMI×(Max-EHT-Tx-NSS-at-80/Max-EHT-Tx-NSS-at-160))(10)

According to the third embodiment, if the operation channel width of the STA is 320MHz, it is to be set according to the calculation method subfield to determine which of the above three options is used to determine the maximum number of spatial streams at the time of transmission or at the time of reception supported by the STA. For example, setting the calculation method subfield to 0, then the use of the first option is indicated; setting the calculation method subfield to 1, then indicating the use of the second option; setting the calculation method subfield to 2 indicates that the third option is used.

According to a third embodiment, the allowed UL MU operation and the allowed frame types that may be transmitted as a response to the trigger frame are determined by the UL MU disable subfield and the UL MU data disable subfield. For example, if both the UL MU disable subfield and the UL MU data disable subfield are set to 0, the STA enables all trigger-based UL MU transmissions. If the UL MU disable subfield is set to 1 and the UL MU data disable subfield is set to 0, the STA suspends all trigger-based UL MU transmissions; and the STA will no longer respond to the received trigger frame. If the UL MU disable subfield is set to 0 and the UL MU data disable subfield is set to 1, the STA may suspend responding to the basic trigger frame with trigger-based UL MU data frame transmission; but the STA may still enable other trigger-based UL MU transmissions.

According to a third embodiment, the STA sets the DL MU-MIMO re-measurement recommendation subfield to 1 to instruct the STA to recommend that the AP re-measure the channel or increase the channel sounding frequency together with the STA. The subfield is set to 0 to indicate that the STA has no proposal about the AP channel sounding frequency.

According to a third embodiment, if the AP transmits an EHT OM control subfield and an OM control subfield, the reserved Tx NSTS subfield, tx NSTS extension subfield, DL MU-MIMO re-measurement recommendation subfield, UL MU disable subfield and UL MU data disable subfield.

According to the present invention, a maximum received NSS for all Rx EHT-MCS values at a first predetermined BW, a maximum received NSS for all Rx EHT-MCS values at a second predetermined BW, and a maximum received NSS for all Rx EHT-MCS values at a third predetermined BW are determined based on EHT capability elements transmitted by the STA.

According to the present invention, a maximum transmission NSS corresponding to all Rx EHT-MCS values at a first predetermined BW, a maximum transmission NSS corresponding to all Rx EHT-MCS values at a second predetermined BW, and a maximum transmission NSS corresponding to all Rx EHT-MCS values at a third predetermined BW are determined based on EHT capability elements transmitted by a STA.

According to the present invention, if the operation channel width of the STA is greater than or equal to 80MHz, in the EHT PPDU having BW of 20MHz, 40MHz or 80MHz, the maximum reception NSS for a given EHT-MCS value is equal to the smaller of:

-one of the value of maximum received Nss (Rx Max Nss) supporting the EHT-MCS 0-9 field, the value of maximum received NSS supporting the EHT-MCS10-11 field or the value of maximum received NSS supporting the EHT-MCS12-13 field in the EHT-MCS mapping (BW.ltoreq.80 MHz, except for only 20MHz STAs) subfield of the EHT capability element, which corresponds to the given EHT-MCS value;

-ifThe value of Rx NSS type is 0, and the values of Rx NSS (BW.ltoreq.80 MHz) field and Rx NSS extension (BW.ltoreq.80 MHz) field of the operation mode notification frame or operation mode notification element indicate the maximum N supported _SS The method comprises the steps of carrying out a first treatment on the surface of the Alternatively, the maximum N supported is indicated with the value of the Rx NSS (BW.ltoreq.80 MHz) field of the EHT operation mode notification frame or EHT operation mode notification element _SS The method comprises the steps of carrying out a first treatment on the surface of the Alternatively, the maximum N supported is indicated with the value of the Rx NSS extension field of the EHT OM control subfield together with the value of the Rx NSS field of the OM control subfield _SS 。

According to the present invention, if the operation channel width of the STA is greater than or equal to 160MHz, in the EHT PPDU having a BW of 160MHz, the maximum reception N for a given EHT-MCS value _SS Equal to the smaller of the following cases:

-one of the value of the maximum received Nss supporting the EHT-MCS 0-9 field, the value of the maximum received Nss supporting the EHT-MCS10-11 field, or the value of the maximum received Nss supporting the EHT-MCS12-13 field in the EHT-MCS mapping (bw=160 MHz) subfield of the EHT capability element, which corresponds to a given EHT-MCS value;

-indicating the supported maximum N with the value of the Rx NSS (bw=160 MHz) field of the operation mode notification frame or operation mode notification element if the value of the Rx NSS type is 0 _SS The method comprises the steps of carrying out a first treatment on the surface of the Alternatively, the supported maximum N is indicated with the value of the Rx NSS (bw=160 MHz) field of the EHT operation mode notification frame or EHT operation mode notification element _SS The method comprises the steps of carrying out a first treatment on the surface of the Alternatively, the maximum N supported is indicated with the value of the Rx NSS extension field of the EHT OM control subfield together with the value of the Rx NSS field of the OM control subfield _SS 。

According to the present invention, if the operation channel width of the STA is equal to 320MHz, in the EHT PPDU having BW of 320MHz, the maximum reception N for a given EHT-MCS value _SS Equal to the smaller of the following cases:

-one of the value of the maximum received Nss supporting the EHT-MCS 0-9 field, the value of the maximum received Nss supporting the EHT-MCS10-11 field, or the value of the maximum received Nss supporting the EHT-MCS12-13 field in the EHT-MCS mapping (bw=320 MHz) subfield of the EHT capability element, which corresponds to a given EHT-MCS value;

-if of the Rx NSS typeWith a value of 0, the maximum N supported is indicated by the value of the Rx NSS (bw=320 MHz) field of the operation mode notification frame or operation mode notification element _SS The method comprises the steps of carrying out a first treatment on the surface of the Alternatively, the supported maximum N is indicated with the value of the Rx NSS (bw=320 MHz) field of the EHT operation mode notification frame or EHT operation mode notification element _SS The method comprises the steps of carrying out a first treatment on the surface of the Alternatively, the maximum N supported is indicated with the value of the Rx NSS extension field of the EHT OM control subfield together with the value of the Rx NSS field of the OM control subfield _SS 。

According to the present invention, if the operation channel width of the STA is greater than or equal to 80MHz, in the EHT PPDU having BW of 20MHz, 40MHz or 80MHz, the maximum transmission NSS for a given EHT-MCS value is equal to the smaller of:

-one of the value of maximum transmission Nss (Tx Max Nss) supporting the EHT-MCS 0-9 field, the value of maximum transmission NSS supporting the EHT-MCS10-11 field, or the value of maximum transmission NSS supporting the EHT-MCS12-13 field in the EHT-MCS mapping (BW.ltoreq.80 MHz, except for only 20MHz STAs) subfield of the EHT capability element, corresponding to a given EHT-MCS value;

-indicating the supported maximum N with the value of the Tx NSS (bw+.80 MHz) field of the operation mode notification frame or operation mode notification element _SS The method comprises the steps of carrying out a first treatment on the surface of the Alternatively, the supported maximum N is indicated with the value of the Tx NSS (BW.ltoreq.80 MHz) field of the EHT operation mode notification frame or EHT operation mode notification element _SS The method comprises the steps of carrying out a first treatment on the surface of the Alternatively, the maximum N supported is indicated with the value of the Tx NSTS extension field of the EHT OM control subfield together with the value of the Tx NSTS field of the OM control subfield _SS 。

According to the present invention, if the operation channel width of the STA is greater than or equal to 160MHz, in the EHT PPDU having a BW of 160MHz, the maximum transmission NSS for a given EHT-MCS value is equal to the smaller of:

-one of the value of the maximum transmission Nss supporting the EHT-MCS 0-9 field, the value of the maximum transmission Nss supporting the EHT-MCS10-11 field, or the value of the maximum transmission Nss supporting the EHT-MCS 12-13 field in the EHT-MCS mapping (bw=160 MHz) subfield of the EHT capability element, which corresponds to a given EHT-MCS value;

tx NSS (bw=) of notification frame or operation mode notification element in operation mode160 MHz) field value indicates the maximum N supported _SS The method comprises the steps of carrying out a first treatment on the surface of the Alternatively, the supported maximum N is indicated with the value of the Tx NSS (bw=160 MHz) field of the EHT operation mode notification frame or EHT operation mode notification element _SS The method comprises the steps of carrying out a first treatment on the surface of the Alternatively, the maximum N supported is indicated with the value of the Tx NSTS extension field of the EHT OM control subfield together with the value of the Tx NSTS field of the OM control subfield _SS 。

According to the present invention, if the operation channel width of the STA is equal to 320MHz, in the EHT PPDU with BW of 320MHz, the maximum transmission NSS for a given EHT-MCS value is equal to the smaller of:

-one of the value of the maximum transmission Nss supporting the EHT-MCS 0-9 field, the value of the maximum transmission Nss supporting the EHT-MCS10-11 field, or the value of the maximum transmission Nss supporting the EHT-MCS 12-13 field in the EHT-MCS mapping (bw=320 MHz) subfield of the EHT capability element, which corresponds to a given EHT-MCS;

-indicating the supported maximum N with the value of the Tx NSS (bw=320 MHz) field of the operation mode notification frame or operation mode notification element _SS The method comprises the steps of carrying out a first treatment on the surface of the Alternatively, the supported maximum N is indicated with the value of the Tx NSS (bw=320 MHz) field of the EHT operation mode notification frame or EHT operation mode notification element _SS The method comprises the steps of carrying out a first treatment on the surface of the Alternatively, the maximum N supported is indicated with the value of the Tx NSTS extension field of the EHT OM control subfield together with the value of the Tx NSTS field of the OM control subfield _SS 。

In an implementation corresponding to the first embodiment of the present invention, when the frame is an operation mode notification frame or the frame includes an operation mode notification element, then the frame includes: a channel width subfield, a 160/80+80bw subfield, and a 320BW subfield, which indicate the operating channel width at reception and at transmission supported by the STA.

-setting the channel width subfield to 2, the 160/80+80bw subfield to 0, and the 320BW subfield to 1 to indicate the operation channel width at reception and at transmission supported by the STA to be 320MHz.

In an implementation corresponding to the first embodiment of the present invention, when the frame is an operation mode notification frame or the frame includes an operation mode notification element, the frame includes: rx NSS (BW.ltoreq.80 MHz) subfields and Rx NSS extension (BW.ltoreq.80 MHz) subfields.

-if the operating channel width supported by the STA is less than or equal to 80MHz, the Rx NSS extension (BW-80 MHz) subfield indicates together with the Rx NSS (BW-80 MHz) subfield: when receiving an EHT PPDU with BW less than or equal to the operation channel width supported by the STA, the maximum spatial stream number supported by the STA.

-if the operating channel width supported by the STA is greater than 80MHz, the Rx NSS extension (BW-80 MHz) subfield indicates together with the Rx NSS (BW-80 MHz) subfield: upon receiving an EHT PPDU having BW of 20MHz, 40MHz, or 80MHz, the maximum number of spatial streams NSS supported by the STA.

In an implementation corresponding to the second embodiment of the present invention, when the frame is an EHT operation mode notification frame or the frame includes an EHT operation mode notification element, the frame includes: rx NSS (BW.ltoreq.80 MHz) subfield.

-if the operating channel width supported by STA is less than or equal to 80MHz, the Rx NSS (BW. Ltoreq.80 MHz) subfield indicates: when receiving an EHT PPDU with BW less than or equal to the operation channel width supported by the STA, the maximum spatial stream number supported by the STA.

-if the operating channel width supported by STA is greater than 80MHz, the Rx NSS (bw+.80 MHz) subfield indicates: upon receiving an EHT PPDU having BW of 20MHz, 40MHz, or 80MHz, the maximum number of spatial streams supported by the STA.

In implementations corresponding to the first and second embodiments of the present invention, when a frame is an operation mode notification frame or an EHT operation mode notification frame, or a frame includes an operation mode notification element or an EHT operation mode notification element, then the frame includes an Rx NSS (bw=160 MHz) subfield and an Rx NSS (bw=320 BW) subfield.

-if the operating channel width supported by the STA is greater than 80MHz, the Rx NSS (bw=160 MHz) subfield indicates: upon receiving an EHT PPDU with BW of 160MHz, the maximum number of spatial streams supported by the STA.

-if the operating channel width supported by the STA is 320MHz, the Rx NSS (bw=320 MHz) subfield indicates: upon receiving an EHT PPDU with BW of 320MHz, the maximum number of spatial streams supported by the STA.

In implementations corresponding to the first and second embodiments of the present invention, when the frame is an operation mode notification frame or an EHT operation mode notification frame, or the frame includes an operation mode notification element or an EHT operation mode notification element, then the frame includes a Tx NSS (bw+.80 MHz) subfield, a Tx NSS (bw=160 MHz) subfield, and a Tx NSS (bw=320 BW) subfield.

-if the operating channel width supported by STA is less than or equal to 80MHz, tx NSS (BW-80 MHz) subfield indicates: when an EHT PPDU having BW less than or equal to the operation channel width supported by the STA is transmitted, the maximum number of spatial streams supported by the STA.

-if the operating channel width supported by STA is greater than 80MHz, tx NSS (bw+.80 MHz) subfield indicates: when an EHT PPDU having BW of 20MHz, 40MHz, or 80MHz is transmitted, the maximum number of spatial streams supported by the STA. Tx NSS (bw=160 MHz) subfield indication: when an EHT PPDU with BW of 160MHz is transmitted, the maximum number of spatial streams supported by the STA.

-if the operating channel width supported by the STA is 320MHz, the Tx NSS (bw=320 MHz) subfield indicates: when an EHT PPDU with BW of 320MHz is transmitted, the maximum number of spatial streams supported by the STA.

In implementations corresponding to the first and second embodiments of the present invention, when a frame is an operation mode notification frame or an EHT operation mode notification frame, or a frame includes an operation mode notification element or an EHT operation mode notification element, then the frame includes an UL MU disable subfield and an UL MU data disable subfield, which can determine allowed UL MU operation and allowed frame types that can be transmitted as a response to a trigger frame.

-if both the UL MU disable subfield and the UL MU data disable subfield are set to 0, the STA enables all trigger-based UL MU transmissions.

-if the UL MU disable subfield is set to 1 and the UL MU data disable subfield is set to 0, the STA suspends all trigger-based UL MU transmissions; and the STA will no longer respond to the received trigger frame.

-if the UL MU disable subfield is set to 0 and the UL MU data disable subfield is set to 1, the STA may suspend responding to the basic trigger frame with trigger-based UL MU data frame transmission; but the STA may still enable other trigger-based UL MU transmissions.

In implementations corresponding to the first and second embodiments of the present invention, when the frame is an operation mode notification frame or an EHT operation mode notification frame, or the frame includes an operation mode notification element or an EHT operation mode notification element, the frame includes a DL MU-MIMO re-measurement recommendation subfield set to 1 to instruct the STA to suggest that the AP re-measure the channel together with the STA or increase the channel sounding frequency; and the DL MU-MIMO re-measurement recommendation subfield is set to 0 to indicate that the STA has no recommendation about the AP channel sounding frequency.

In an implementation of the second option corresponding to the third embodiment of the present invention, when the frame includes an EHT OM control subfield and an OM control subfield, if the operation channel width of the STA is 320MHz, the maximum number of spatial streams supported by the STA when receiving the EHT PPDU having BW of 320MHz is determined according to the following equation.

floor(Rx-NSS-at-160×(Max-EHT-Rx-NSS-at-320/Max-EHT-Rx-NSS-at-160))

Wherein, rx-NSS-at-160 is the maximum spatial stream number supported by the STA when receiving the EHT PPDU with BW of 160MHz, which is determined according to the following equation.

floor(Rx-NSS-from-OMI×(Max-EHT-Rx-NSS-at-160/Max-EHT-Rx-NSS-at-80))

Wherein, rx-NSS-from-OMI is Rx NSS value deduced from Rx NSS extension sub-field in EHT OM control sub-field and Rx NSS sub-field in OM control sub-field; and, max-EHT-Rx-NSS-at-80, max-EHT-Rx-NSS-at-160, and Max-EHT-Rx-NSS-at-320 are maximum received N of the supported EHT-MCS and NSS set fields transmitted by the STA corresponding to all EHT-MCS values at 80MHz, 160MHz, and 320MHz, respectively _SS 。

In an implementation of the third option corresponding to the third embodiment of the present invention, when the frame includes an EHT OM control subfield and an OM control subfield, if the operation channel width of the STA is 320MHz, the maximum number of spatial streams supported by the STA when receiving the EHT PPDU with BW of 320MHz is determined according to the following equation:

floor(Rx-NSS-from-OMI×(Max-EHT-Rx-NSS-at-320/Max-EHT-Rx-NSS-at-160))

Wherein Rx-NSS-from-OMI is the value of Rx NSS derived from the Rx NSS extension subfield of the EHT OM control subfield and the Rx NSS subfield of the OM control subfield; and, max-EHT-Rx-NSS-at-160 and Max-EHT-Rx-NSS-at-320 are maximum received N for all EHT-MCS values at 160MHz and 320MHz, respectively, of the supported EHT-MCS and NSS set fields transmitted by the STA _SS 。

In an implementation of the third option corresponding to the third embodiment of the present invention, when the frame includes an EHT OM control subfield and an OM control subfield, if the operation channel width of the STA is 320MHz, the maximum number of spatial streams supported by the STA when receiving an EHT PPDU with BW less than or equal to 80MHz is determined according to the following equation:

floor(Rx-NSS-from-OMI×(Max-EHT-Rx-NSS-at-80/Max-EHT-Rx-NSS-at-160))

wherein Rx-NSS-from-OMI is the value of Rx NSS derived from the Rx NSS extension subfield in the EHT OM control subfield and the Rx NSS subfield in the OM control subfield; and, max-EHT-Rx-NSS-at-80 and Max-EHT-Rx-NSS-at-160 are maximum received N of the supported EHT-MCS and NSS set fields transmitted by the STA at 80MHz and 160MHz, respectively, corresponding to all EHT-MCS values _SS 。

In an implementation of the first option corresponding to the third embodiment of the present invention, when the frame includes an EHT OM control subfield and an OM control subfield, if the operation channel width of the STA is 320MHz, the maximum number of spatial streams supported by the STA when transmitting an EHT PPDU with BW of 320MHz is determined according to the following equation:

floor(Tx-NSTS-from-OMI×(Max-EHT-Tx-NSS-at-320/Max-EHT-Tx-NSS-at-80))

Wherein Rx-NSS-from-OMI is the value of Tx NSTS derived from the Tx NSS extension subfield in the EHT OM control subfield and the Tx NSTS subfield in the OM control subfield; and, the supported EHT-MCS and NSS set fields transmitted by Max-EHT-Tx-NSS-at-80 and Max-EHT-Tx-NSS-at-320 for the STA are at 80MHz and 3 MHz, respectivelyMaximum transmit N at 20MHz for all EHT-MCS values _SS 。

In an implementation of the second option corresponding to the third embodiment of the present invention, when the frame includes an EHT OM control subfield and an OM control subfield, if the operation channel width of the STA is 320MHz, the maximum number of spatial streams supported by the STA when transmitting an EHT PPDU with BW of 320MHz is determined according to the following equation:

floor(Tx-NSS-at-160×(Max-EHT-Tx-NSS-at-320/Max-EHT-Tx-NSS-at-160))

wherein Tx-NSS-at-160 is the maximum number of spatial streams supported by the STA when transmitting the EHT PPDU with BW of 160MHz, which is determined according to the following equation:

floor(Tx-NSTS-from-OMI×(Max-EHT-Tx-NSS-at-160/Max-EHT-Tx-NSS-at-80))

wherein, tx-NSTS-from-OMI is the value of Tx NSTS deduced from Tx NSTS extension subfield in EHT OM control subfield and Tx NSTS subfield in OM control subfield; and, max-EHT-Tx-NSS-at-80, max-EHT-Tx-NSS-at-160, and Max-EHT-Tx-NSS-at-320 are maximum transmission N of supported EHT-MCS and NSS set fields transmitted by the STA at 80MHz, 160MHz, and 320MHz, respectively, for all EHT-MCS values _SS 。

In an implementation of the third option corresponding to the third embodiment of the present invention, when the frame includes an EHT OM control subfield and an OM control subfield, if the operation channel width of the STA is 320MHz, the maximum number of spatial streams supported by the STA when transmitting an EHT PPDU with BW of 320MHz is determined according to the following equation:

floor(Tx-NSTS-from-OMI×(Max-EHT-Tx-NSS-at-320/Max-EHT-Tx-NSS-at-160))

wherein, tx-NSTS-from-OMI is Rx NSTS value derived from Tx NSTS extension subfield in EHT OM control subfield and Tx NSTS subfield in OM control subfield; and, max-EHT-Tx-NSS-at-160 and Max-EHT-Tx-NSS-at-320 are maximum transmission N of supported EHT-MCS and NSS set fields at 160MHz and 320MHz, respectively, for all EHT-MCS values transmitted by the STA _SS 。

In an implementation of the third option corresponding to the third embodiment of the present invention, when the frame includes an EHT OM control subfield and an OM control subfield, if the operation channel width of the STA is 320MHz, the maximum number of spatial streams supported by the STA when transmitting an EHT PPDU with BW less than or equal to 80MHz is determined according to the following equation:

floor(Tx-NSTS-from-OMI×(Max-EHT-Tx-NSS-at-80/Max-EHT-Tx-NSS-at-160))

wherein, tx-NSTS-from-OMI is Tx NSTS value derived from Tx NSTS extension subfield in EHT OM control subfield and Tx NSTS subfield in OM control subfield; and, max-EHT-Tx-NSS-at-80 and Max-EHT-Tx-NSS-at-160 are maximum transmission N of supported EHT-MCS and NSS set fields at 80MHz and 160MHz, respectively, for all EHT-MCS values transmitted by the STA _SS 。

The commercial benefits of some embodiments are as follows: 1. solves the problems in the prior art. 2. The OM is changed efficiently. 3. Providing good communication performance. 4. Providing high reliability. 5. Some embodiments of the invention will be used by chipset vendors, communication system development vendors, automobile, train, truck, bus, bicycle, motorcycle, helmet, etc. automobile manufacturers, unmanned aerial vehicles (unmanned aerial vehicles), smart phone manufacturers, communication devices for public safety purposes, AR/VR device manufacturers (e.g., games, conference/seminars, educational purposes).

Fig. 9 is a block diagram of an example system 700 for wireless communication in accordance with an embodiment of the present invention. The described embodiments of the invention may be implemented into a system using any suitable configuration of hardware and/or software. Fig. 9 shows a system 700 comprising: radio Frequency (RF) circuitry 710, baseband circuitry 720, application circuitry 730, memory/storage 740, display 750, camera 760, sensor 770, input/output (I/O) interface 780 (coupled to one another at least as shown). Application circuitry 730 may include circuitry such as, but not limited to, one or more single-core or multi-core processors. Processors may include any combination of general-purpose processors and special-purpose processors, such as graphics processors and application processors. The processor may be coupled with the memory/storage device and configured to execute instructions stored in the memory/storage device to enable various applications and/or operating systems to be run on the system.

Baseband circuitry 720 may include circuitry such as, but not limited to, one or more single-core or multi-core processors. The processor may comprise a baseband processor. The baseband circuitry may handle various radio control functions that may communicate with one or more radio networks through the RF circuitry. The radio control functions may include, but are not limited to: signal modulation, encoding, decoding, radio frequency shifting, etc. In some embodiments, baseband circuitry may provide communications compatible with one or more radio technologies. For example, in some embodiments, the baseband circuitry may support communication with an evolved universal terrestrial radio access network (Evolved Universal Terrestrial Radio Access Network, EUTRAN), and/or other wireless metropolitan area networks (Wireless Metropolitan Area Network, WMAN), wireless local area networks (Wireless Local Area Network, WLAN), wireless personal area networks (Wireless Personal Area Network, WPAN). In an embodiment, a baseband circuit configured to support radio communications of more than one wireless protocol may be referred to as a multi-mode baseband circuit.

In various embodiments, baseband circuitry 720 may include circuitry to operate with signals that are not strictly considered to be in baseband frequency. For example, in some embodiments, the baseband circuitry may include circuitry to operate on signals having an intermediate frequency between the baseband frequency and the radio frequency. RF circuitry 710 may enable communication of modulated electromagnetic radiation with a wireless network via a non-solid medium. In various embodiments, the RF circuitry may include: switches, filters, amplifiers, etc. to facilitate communication with the wireless network. In various embodiments, RF circuitry 710 may include circuitry for operating with signals that are not strictly considered to be at radio frequencies. For example, in some embodiments, the RF circuitry may include circuitry for operating on signals having an intermediate frequency between a baseband frequency and a radio frequency.

In various embodiments, the transmitter, control, or receiver circuitry discussed above for an AP or STA may be embodied in whole or in part in one or more of RF circuitry, baseband circuitry, and application circuitry. As used herein above with reference to the present invention, "circuitry" may refer to or include circuitry that comprises: an Application Specific Integrated Circuit (ASIC), an electronic circuit, a processor (shared, dedicated, or group), and/or memory (shared, dedicated, or group) that execute one or more software or firmware programs, a combinational logic circuit, and/or other suitable hardware components that provide the described functionality. In some embodiments, electronic device circuitry may be implemented by one or more software or firmware modules, or functions associated with the circuitry may be implemented by one or more software or firmware modules. In some embodiments, some or all of the constituent components of the baseband circuitry, application circuitry, and/or memory/storage may be implemented together On a System On a Chip (SOC). Memory/storage 740 may be used to load and store data and/or instructions, for example, for the system. The memory/storage in embodiments may include any combination of suitable volatile memory, such as dynamic random access memory (Dynamic Random Access Memory, DRAM), and/or non-volatile memory, such as flash memory.

In various embodiments, I/O interface 780 may include one or more user interfaces designed to enable a user to interact with the system and/or peripheral component interfaces designed to enable peripheral components to interact with the system. The user interface may include, but is not limited to: physical keyboards or keypads, touchpads, speakers, microphones, etc. The peripheral component interface may include, but is not limited to: a non-volatile memory port, a universal serial bus (Universal Serial Bus, USB) port, an audio jack, and a power interface. In various embodiments, the sensor 770 may include one or more sensing devices to determine environmental conditions and/or location information related to the system. In some embodiments, the sensor may include, but is not limited to: a gyroscope sensor, an accelerometer, a proximity sensor, an ambient light sensor, and a positioning unit. The positioning unit may also be part of, or interact with, baseband circuitry and/or RF circuitry to communicate with components of a positioning network, such as global positioning system (Global Positioning System, GPS) satellites.

In various embodiments, display 750 may include a display, such as a liquid crystal display and a touch screen display. In various embodiments, system 700 may be a mobile computing device such as, but not limited to: notebook computing devices, tablet computing devices, netbooks, ultrabooks, smartphones, AR/VR glasses, and the like. In various embodiments, the system may have more or fewer components and/or different architectures. The method described in the present invention may be implemented as a computer program where appropriate. The computer program may be stored on a storage medium such as a non-transitory storage medium.

Those of ordinary skill in the art will appreciate that each of the elements, algorithms, and steps described and disclosed in the embodiments of the invention are implemented using electronic hardware, or combinations of software for computers and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Those of ordinary skill in the art may implement the functionality of each particular application in different ways without departing from the scope of the invention. It will also be appreciated by those of ordinary skill in the art that since the operation of the systems, devices and units described above are substantially identical, he/she may refer to the operation of the systems, devices and units in the embodiments described above. For convenience of description and simplification, the present invention will not be described in detail.

It should be understood that the disclosed systems, devices, and methods of embodiments of the present invention may be implemented in other ways. The above-described embodiments are merely exemplary. The partitioning of the cells is based solely on logic functions, while other partitions exist in the implementation. Multiple units or components may be combined or integrated in another system. It is also possible to omit or skip certain features. On the other hand, the mutual coupling, direct coupling or communicative coupling shown or discussed, and may operate indirectly or communicatively through some port, device or unit, in an electrical, mechanical or other manner. The units as separate parts for illustration purposes may be physically separated or not. The units for display may or may not be physical units, i.e. may be located in one location or distributed over a plurality of network units. Some or all of the units may be used depending on the purpose of the embodiment. Moreover, each functional unit in each embodiment may be physically integrated in one processing unit independently, or integrated in one processing unit having two or more units.

If the software functional unit is implemented and used as a product sale, it may be stored in a readable storage medium of a computer. Based on this understanding, the solution proposed by the invention can be implemented essentially or partly in the form of a software product. Alternatively, it may be implemented in the form of a part of a software product of a technical solution beneficial to the conventional art. The software product in the computer is stored in a storage medium, including a plurality of commands for causing a computing device (e.g., a personal computer, a server, or a network device) to execute all or some of the steps disclosed by the embodiments of the present invention. The storage medium includes: a USB disk, a removable hard disk, a read-only memory (ROM), a random-access memory (RAM), a floppy disk, or other medium capable of storing program code.

While the invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not to be limited to the disclosed embodiment, but is intended to cover various arrangements included within the scope of the appended claims.

Claims

1. A method of wireless communication, comprising:

the station STA determines operation mode information including: when transmitting or receiving an extremely high throughput EHT physical layer protocol data unit PPDU, the maximum number of spatial streams NSS supported by the STA; and

The STA determines the maximum NSS based on an operating channel width of the STA and a bandwidth BW of the EHT PPDU.

2. The wireless communication method of claim 1, wherein the operation mode information further includes the operation channel width, and the operation mode information is carried in an operation mode notification frame or an operation mode notification element contained in one medium access control MAC frame; wherein the operation mode notification frame and the operation mode notification element each include an operation mode field and an EHT operation mode field.

3. The wireless communication method of claim 2, wherein the operation mode notification frame is a very high throughput VHT action frame when the operation mode information is carried in the operation mode notification frame.

4. The wireless communication method of claim 2, wherein the operation mode field comprises a channel width subfield and a 160/80+80bw subfield, and the EHT operation mode field comprises a 320BW subfield; and wherein the operating channel width is indicated by the channel width subfield, the 160/80+80bw subfield, and the 320BW subfield.

5. The wireless communication method of claim 4, wherein the operation mode field further includes an Rx NSS type subfield, and the operation channel width at the time of reception and at the time of transmission supported is indicated by the channel width subfield, the 160/80+80bw subfield, and the 320BW subfield when the Rx NSS type subfield is a predetermined value.

6. The wireless communication method of claim 4, wherein the operating channel width is 320MHz when the channel width subfield is 2, the 160/80+80bw subfield is 0, and the 320BW subfield is 1.

7. The wireless communication method of claim 2, wherein the operation mode field includes an Rx NSS subfield, the EHT operation mode field includes an Rx NSS extension subfield, and the Rx NSS extension subfield and the Rx NSS subfield are used to indicate a maximum NSS at a supported reception.

8. The wireless communication method of claim 7, wherein the Rx NSS extension subfield indicates with the Rx NSS subfield that when the operating channel width is less than or equal to a predetermined BW: and a maximum NSS supported when receiving an EHT PPDU having a BW less than or equal to the operating channel width.

9. The wireless communication method of claim 7, wherein the Rx NSS extension subfield indicates with the Rx NSS subfield that when the operating channel width is greater than a predetermined BW: and a supported maximum NSS when receiving the EHT PPDU with a specific BW, wherein the specific BW is smaller than or equal to the predetermined BW.

10. The wireless communication method of claim 7, wherein the Rx NSS extension subfield provides a most significant bit MSB of a maximum NSS for reception and the Rx NSS subfield provides a number of least significant bits LSB of the maximum NSS for reception.

11. The wireless communication method of claim 2, wherein the EHT operation mode field includes an Rx NSS subfield corresponding to a predetermined BW; and wherein the Rx NSS subfield indicates a supported maximum NSS when receiving an EHT PPDU with the predetermined BW when the operation channel width is the predetermined BW.

12. The wireless communication method of claim 2, wherein the EHT operation mode field includes a Tx NSS subfield, and the Tx NSS subfield is used to indicate a maximum NSS when supported for transmission.

13. The wireless communication method of claim 12, wherein the Tx NSS subfield indicates, when the operating channel width is less than or equal to a predetermined BW: and a maximum NSS supported when an EHT PPDU having a BW less than or equal to the operating channel width is transmitted.

14. The wireless communication method of claim 12, wherein the Tx NSS subfield indicates that when the operating channel width is greater than a predetermined BW: and a supported maximum NSS when an EHT PPDU with a specific BW is transmitted, wherein the specific BW is smaller than or equal to the preset BW.

15. The wireless communication method of claim 12, wherein the Tx NSS subfield indicates a supported maximum NSS when an EHT PPDU having a predetermined BW is transmitted when the operation channel width is the predetermined BW.

16. The wireless communication method according to any one of claims 8 and 13, wherein the predetermined BW is 80MHz.

17. The wireless communication method according to any one of claims 9 and 14, wherein the predetermined BW is 80MHz, and the specific BW is 20MHz, 40MHz, or 80MHz.

18. The wireless communication method according to any one of claims 11 and 15, wherein the predetermined BW is 160MHz or 320MHz.

19. The wireless communication method of claim 2, wherein the EHT operation mode field comprises: an uplink UL multi-user MU disable subfield and an UL MU data disable subfield for determining allowed UL MU operation and allowed frame types to be transmitted as a response to a trigger frame; and wherein when the UL MU disable subfield and the UL MU data disable subfield are both set to a first value, enabling all trigger-based UL MU transmissions; when the UL MU disable subfield is set to a second value and the UL MU data disable subfield is set to the first value, suspending all trigger-based UL MU transmissions and no longer responding to the received trigger frame; and suspending responding to a basic trigger frame with trigger-based UL MU data frame transmissions while still enabling other trigger-based UL MU transmissions when the UL MU disable subfield is set to the first value and the UL MU data disable subfield is set to the second value.

20. The wireless communication method of claim 2, wherein the EHT operation mode field comprises: a downlink DL multi-user MU multiple-input multiple-output MIMO re-measurement recommendation subfield indicating a recommendation to re-measure a channel or increase a channel sounding frequency.

21. The wireless communication method according to claim 1, wherein the operation mode information further includes the operation channel width, and the operation mode information is carried in an EHT operation mode notification frame or an EHT operation mode notification element contained in one medium access control MAC frame; wherein the EHT operation mode notification frame and the EHT operation mode notification element each include an EHT operation mode field.

22. The wireless communication method according to claim 21, wherein the EHT operation mode notification frame is an EHT action frame when the operation mode information is carried in the EHT operation mode notification frame.

23. The wireless communication method of claim 21, wherein the EHT operation mode field includes a channel width subfield indicating the supported operation channel width at reception and at transmission.

24. The wireless communication method of claim 23, wherein the operating channel width is 320MHz when the channel width subfield is a predetermined value.

25. The wireless communication method of claim 21, wherein the EHT operation mode field includes an Rx NSS subfield, and the Rx NSS subfield is used to indicate a maximum NSS at the time of supported reception.

26. The wireless communication method of claim 25, wherein the Rx NSS subfield indicates that when the operating channel width is less than or equal to a predetermined BW: and a maximum NSS supported when receiving an EHT PPDU having a BW less than or equal to the operating channel width.

27. The wireless communication method of claim 25, wherein the Rx NSS subfield indicates that when the operating channel width is greater than a predetermined BW: and a supported maximum NSS when receiving the EHT PPDU with a specific BW, wherein the specific BW is smaller than or equal to the predetermined BW.

28. The wireless communication method of claim 25, wherein the Rx NSS subfield indicates a supported maximum NSS when receiving an EHT PPDU with a predetermined BW when the operating channel width is equal to the predetermined BW.

29. The wireless communication method of claim 21, wherein the EHT operation mode field includes a Tx NSS subfield, and the Tx NSS subfield is used to indicate a maximum NSS when supported for transmission.

30. The wireless communication method of claim 29, wherein the Tx NSS subfield indicates, when the operating channel width is less than or equal to a predetermined BW: and a maximum NSS supported when an EHT PPDU having a BW less than or equal to the operating channel width is transmitted.

31. The wireless communication method of claim 29, wherein the Tx NSS subfield indicates that when the operating channel width is greater than a predetermined BW: and a supported maximum NSS when an EHT PPDU with a specific BW is transmitted, wherein the specific BW is smaller than or equal to the preset BW.

32. The wireless communication method of claim 29, wherein the Tx NSS subfield indicates a supported maximum NSS when transmitting an EHT PPDU with a predetermined BW when the operating channel width is equal to the predetermined BW.

33. The wireless communication method according to any one of claims 26 and 30, wherein the predetermined BW is 80MHz.

34. The wireless communication method according to any one of claims 27 and 31, wherein the predetermined BW is 80MHz, and the specific BW is 20MHz, 40MHz, or 80MHz.

35. The wireless communication method according to any one of claims 28 and 32, wherein the predetermined BW is 160MHz or 320MHz.

36. The wireless communication method of claim 21, wherein the EHT operation mode field comprises: an uplink UL multi-user MU disable subfield and an UL MU data disable subfield for determining allowed UL MU operation and allowed frame types to be transmitted as a response to a trigger frame; and wherein when the UL MU disable subfield and the UL MU data disable subfield are both set to a first value, enabling all trigger-based UL MU transmissions; when the UL MU disable subfield is set to a second value and the UL MU data disable subfield is set to the first value, suspending all trigger-based UL MU transmissions and no longer responding to the received trigger frame; and suspending responding to a basic trigger frame with trigger-based UL MU data frame transmissions while still enabling other trigger-based UL MU transmissions when the UL MU disable subfield is set to the first value and the UL MU data disable subfield is set to the second value.

37. The wireless communication method of claim 21, wherein the EHT operation mode field comprises: downlink DL multi-user MU multiple input multiple output MIMO re-measurement

A recommendation subfield indicating a recommendation to re-measure a channel or increase a channel sounding frequency.

38. The wireless communication method of claim 1, wherein the operating mode information further comprises the operating channel width, the operating mode information carried in a high efficiency HE variant high throughput HT control field of a data frame or a management frame, the HE variant HT control field comprising an operating mode OM control subfield and an EHT OM control subfield.

39. The wireless communication method of claim 38, wherein the OM control subfield comprises: a channel width subfield, the EHT OM control subfield including a channel width extension subfield; and wherein the operating channel width is indicated by the channel width extension subfield and the channel width subfield together.

40. The wireless communication method of claim 38, wherein the OM control subfield includes an Rx NSS subfield, the EHT OM control subfield includes an Rx NSS extension subfield, and the Rx NSS extension subfield and the Rx NSS subfield are used to indicate a maximum NSS at supported reception.

41. The wireless communication method of claim 40, wherein the Rx NSS extension subfield indicates with the Rx NSS subfield that when the operating channel width is less than or equal to a first predetermined BW: the maximum NSS supported when in an EHT PPDU with BW less than or equal to the operating channel width is received.

42. The wireless communication method of claim 40, wherein the Rx NSS extension subfield indicates with the Rx NSS subfield that when the operating channel width is equal to a second predetermined BW: and a supported maximum NSS when receiving an EHT PPDU having a BW less than or equal to a first predetermined BW, the first predetermined BW being less than the second predetermined BW.

43. The wireless communication method of claim 40 wherein when the operating channel width is equal to a second predetermined BW, the supported maximum NSS at the time of receiving the EHT PPDU with the second predetermined BW is determined by a round-down floor function of a product of an Rx NSS value derived from the EHT OM control subfield and the OM control subfield and a ratio of the maximum received NSS corresponding to all Rx EHT-MCS values at the second predetermined BW to the maximum received NSS corresponding to all Rx EHT-MCS values at a first predetermined BW, the first predetermined BW being smaller than the second predetermined BW.

44. The wireless communication method of claim 43 wherein the maximum received NSS for all Rx EHT-MCS values at the first predetermined BW and the maximum received NSS for all Rx EHT-MCS values at the second predetermined BW are determined from EHT capability elements.

45. The wireless communication method of claim 38, wherein the OM control subfield includes a Tx NSTS subfield, the EHT OM control subfield includes a Tx NSTS extension subfield, and the Tx NSTS extension subfield and the Tx NSTS subfield are used to indicate a maximum space-time stream NSTS at a supported transmission.

46. The wireless communication method of claim 45, wherein the Tx NSTS extension subfield indicates with the Tx NSTS subfield when the operating channel width is less than or equal to a first predetermined BW: a supported maximum NSTS when transmitting an EHT PPDU with BW less than or equal to the operating channel width; and wherein the maximum NSTS supporting transmission is equal to the maximum NSS supporting transmission.

47. The wireless communication method of claim 45, wherein the Tx NSTS extension subfield indicates with the Tx NSTS subfield that when the operating channel width is equal to a second predetermined BW: a supported maximum NSTS when transmitting an EHT PPDU having a BW less than or equal to a first predetermined BW, the first predetermined BW being less than the second predetermined BW; and wherein the maximum NSTS supporting transmission is equal to the maximum NSS supporting transmission.

48. The wireless communication method of claim 45, wherein the supported maximum NSS in transmitting the EHT PPDU with the second predetermined BW is determined by a round-down floor function of a product of a Tx NSTS value derived from the EHT OM control subfield and the OM control subfield and a ratio of a maximum transmit NSS corresponding to all Tx EHT-MCS values at the second predetermined BW to a maximum transmit NSS corresponding to all Tx EHT-MCS values at a first predetermined BW, the first predetermined BW being less than the second predetermined BW, when the operating channel width is equal to the second predetermined BW.

49. The wireless communication method of claim 45 wherein the maximum transmit NSS for all Rx EHT-MCS values at the first predetermined BW and the maximum transmit NSS for all Rx EHT-MCS values at the second predetermined BW are determined from an EHT capability element.

50. The wireless communication method of claim 40, wherein the Rx NSS extension subfield indicates with the Rx NSS subfield that when the operating channel width is equal to a third predetermined BW: and a supported maximum NSS when receiving an EHT PPDU having a BW less than or equal to a first predetermined BW, the first predetermined BW being less than the third predetermined BW.

51. The wireless communication method of claim 40 wherein when the operating channel width is equal to a third predetermined BW, the supported maximum NSS upon receipt of an EHT PPDU having a second predetermined BW that is less than the third predetermined BW is determined by a round-down floor function of a product of an Rx NSS value derived from the EHT OM control subfield and the OM control subfield and a ratio of a maximum received NSS corresponding to all Rx EHT-MCS values at the second predetermined BW to a maximum received NSS corresponding to all Rx EHT-MCS values at a first predetermined BW that is less than the second predetermined BW.

52. The wireless communication method of claim 40 wherein when the operating channel width is equal to a third predetermined BW, the supported maximum NSS at the time of receiving the EHT PPDU with the third predetermined BW is determined by a round-down floor function of a product of an Rx NSS value derived from the EHT OM control subfield and the OM control subfield and a ratio of the maximum received NSS corresponding to all Rx EHT-MCS values at the third predetermined BW to the maximum received NSS corresponding to all Rx EHT-MCS values at a first predetermined BW, the first predetermined BW being smaller than the third predetermined BW.

53. The wireless communication method of claim 45, wherein the Tx NSTS extension subfield indicates with the Tx NSTS subfield that when the operating channel width is equal to a third predetermined BW: a supported maximum NSTS when transmitting an EHT PPDU having a BW less than or equal to a first predetermined BW, the first predetermined BW being less than the third predetermined BW; and wherein the maximum NSTS supporting transmission is equal to the maximum NSS supporting transmission.

54. The wireless communication method of claim 45 wherein when the operating channel width is equal to a third predetermined BW, the supported maximum NSS when transmitting an EHT PPDU having a second predetermined BW that is less than the third predetermined BW is determined by a round-down floor function of a product of a Tx NSTS value derived from the EHT OM control subfield and the OM control subfield and a ratio of a maximum transmission NSS corresponding to all Tx EHT-MCS values at the second predetermined BW to a maximum transmission NSS corresponding to all Tx EHT-MCS values at a first predetermined BW that is less than the second predetermined BW.

55. The wireless communication method of claim 45, wherein when the operating channel width is equal to a third predetermined BW, the supported maximum NSS in transmitting an EHT PPDU with the third predetermined BW is determined by a round-down floor function of a product of a Tx NSTS value derived from the EHT OM control subfield and the OM control subfield and a ratio of a maximum transmission NSS corresponding to all Tx EHT-MCS values at the third predetermined BW to a maximum transmission NSS corresponding to all Tx EHT-MCS values at a first predetermined BW, the first predetermined BW being smaller than the third predetermined BW.

56. The wireless communication method of claim 40 wherein when the operating channel width is equal to a third predetermined BW, the supported maximum NSS when receiving an EHT PPDU with a third predetermined BW is determined by a floor down function of a product of the supported maximum NSS when receiving an EHT PPDU with a second predetermined BW and a ratio of the maximum received NSS corresponding to all Rx EHT-MCS values at the third predetermined BW to the maximum received NSS corresponding to all Rx EHT-MCS values at the second predetermined BW, the second predetermined BW being greater than the first predetermined BW and less than the third predetermined BW.

57. The wireless communication method of claim 45, wherein when the operating channel width is equal to a third predetermined BW, the supported maximum NSS when transmitting an EHT PPDU with a third predetermined BW is determined by a floor down function of a product of the supported maximum NSS when transmitting an EHT PPDU with a second predetermined BW and a ratio of the maximum transmission NSS corresponding to all Tx EHT-MCS values at the third predetermined BW to the maximum transmission NSS corresponding to all Tx EHT-MCS values at the second predetermined BW, the second predetermined BW being greater than the first predetermined BW and less than the third predetermined BW.

58. The wireless communication method of claim 40, wherein the Rx NSS extension subfield indicates with the Rx NSS subfield that when the operating channel width is equal to a third predetermined BW: and a maximum NSS supported when receiving an EHT PPDU having a BW less than or equal to a second predetermined BW, the second predetermined BW being less than the third predetermined BW.

59. The wireless communication method of claim 40 wherein when the operating channel width is equal to a third predetermined BW, the supported maximum NSS at the time of receiving the EHT PPDU with the third predetermined BW is determined by a round-down floor function of a product of an Rx NSS value derived from the EHT OM control subfield and the OM control subfield and a ratio of the maximum received NSS corresponding to all Rx EHT-MCS values at the third predetermined BW to the maximum received NSS corresponding to all Rx EHT-MCS values at a second predetermined BW, the second predetermined BW being greater than the first predetermined BW and less than the third predetermined BW.

60. The wireless communication method of claim 40 wherein when the operating channel width is equal to a third predetermined BW, the supported maximum NSS when receiving an EHT PPDU having a BW less than or equal to a first predetermined BW is determined by a round-down floor function of a product of an Rx NSS value derived from the EHT OM control subfield and the OM control subfield and a ratio of the maximum received NSS corresponding to all Rx EHT-MCS values at the first predetermined BW to the maximum received NSS corresponding to all Rx EHT-MCS values at a second predetermined BW, the second predetermined BW being greater than the first predetermined BW and less than the third predetermined BW.

61. The wireless communication method of claim 45, wherein the Tx NSTS extension subfield indicates with the Tx NSTS subfield that when the operating channel width is equal to a third predetermined BW: a supported maximum NSTS when transmitting an EHT PPDU having a BW less than or equal to a second predetermined BW, the first predetermined BW being less than the third predetermined BW; and wherein the maximum NSTS supporting transmission is equal to the maximum NSS supporting transmission.

62. The wireless communication method of claim 45, wherein when the operating channel width is equal to a third predetermined BW, the supported maximum NSS in transmitting the EHT PPDU with the third predetermined BW is determined by a round-down floor function of a product of a Tx NSTS value derived from the EHT OM control subfield and the OM control subfield and a ratio of the maximum transmit NSS corresponding to all Tx EHT-MCS values at the third predetermined BW to the maximum transmit NSS corresponding to all Tx EHT-MCS values at a second predetermined BW, the second predetermined BW being greater than the first predetermined BW and less than the third predetermined BW.

63. The wireless communication method of claim 45, wherein when the operating channel width is equal to a third predetermined BW, the supported maximum NSS when transmitting an EHT PPDU having a BW less than or equal to a first predetermined BW is determined by a round-down floor function of a product of a Tx NSTS value derived from the EHT OM control subfield and the OM control subfield and a ratio of a maximum transmit NSS corresponding to all Tx EHT-MCS values at the first predetermined BW to a maximum transmit NSS corresponding to all Tx EHT-MCS values at a second predetermined BW, the second predetermined BW being greater than the first predetermined BW and less than the third predetermined BW.

64. The wireless communication method of claim 38, wherein the EHT OM control subfield comprises a calculation method subfield; and determining a supported maximum NSS at transmission or at reception for an operating channel width of 320MHz according to the calculation method subfield.

65. The wireless communication method of claim 38, wherein the OM control subfield comprises: an uplink UL multi-user MU disable subfield and an UL MU data disable subfield for determining allowed UL MU operation and allowed frame types to be transmitted as a response to a trigger frame; and wherein when the UL MU disable subfield and the UL MU data disable subfield are both set to a first value, enabling all trigger-based UL MU transmissions; when the UL MU disable subfield is set to a second value and the UL MU data disable subfield is set to the first value, suspending all trigger-based UL MU transmissions and no longer responding to the received trigger frame; and suspending responding to a basic trigger frame with trigger-based UL MU data frame transmissions while still enabling other trigger-based UL MU transmissions when the UL MU disable subfield is set to the first value and the UL MU data disable subfield is set to the second value.

66. The wireless communication method of claim 38, wherein the OM control subfield comprises: a downlink DL multi-user MU multiple-input multiple-output MIMO re-measurement recommendation subfield indicating a recommendation to re-measure a channel or increase a channel sounding frequency.

67. The wireless communication method of any of claims 40 and 48, wherein the Rx NSS extension subfield provides a most significant bit MSB of a maximum NSS for reception and the Rx NSS subfield provides a number of least significant bits LSBs of the maximum NSS for reception.

68. The wireless communication method of any of claims 44 and 51 wherein the Tx NSTS extension subfield provides the most significant bit MSB of the maximum NSTS for transmission and the Tx NSTS subfield provides several least significant bits LSBs of the maximum NSTS for transmission.

69. The wireless communication method of any of claims 41 and 43, wherein the first predetermined BW is 80MHz.

70. The wireless communication method of any of claims 42, 41, 47 and 48 wherein the first predetermined BW is 80MHz and the second predetermined BW is 160MHz.

71. The wireless communication method of any of claims 49, 52, 53 and 55 wherein the first predetermined BW is 80MHz and the third predetermined BW is 320MHz.

72. The wireless communication method of any of claims 58 and 61 wherein the second predetermined BW is 160MHz and the third predetermined BW is 320MHz.

73. The wireless communication method of any of claims 49, 54, 56, 57, 59, 60, 62, and 63 wherein the first predetermined BW is 80MHz, the second predetermined BW is 160MHz, and the third predetermined BW is 320MHz.

74. The wireless communication method according to claim 1, wherein, when the operation channel width is greater than or equal to a predetermined BW, in an EHT PPDU having a specific BW smaller than or equal to the predetermined BW, a maximum reception NSS of a given EHT-MCS value is equal to a smaller one of:

a value of a maximum received NSS for the given EHT-MCS value in an EHT-MCS mapping subfield of an EHT capability element corresponding to the specific BW; and

maximum NSS at supported reception indicated by the values of the Rx NSS field and the Rx NSS extension field of the operation mode notification frame or operation mode notification element; alternatively, the maximum NSS at supported reception indicated by the value of the Rx NSS field of the EHT operation mode notification frame or EHT operation mode notification element; alternatively, the maximum NSS at the time of reception is supported, indicated by the value of the Rx NSS extension field of the EHT OM control subfield and the value of the Rx NSS field of the OM control subfield together.

75. The wireless communication method according to claim 1, wherein, when the operation channel width is greater than or equal to a predetermined BW, in an EHT PPDU having the predetermined BW, a maximum reception NSS of a given EHT-MCS value is equal to a smaller one of:

a value of a maximum received NSS for the given EHT-MCS value in an EHT-MCS mapping subfield of an EHT capability element corresponding to the predetermined BW; and

informing the supported maximum received NSS indicated by the value of the Rx NSS field of the frame in the operation mode; or, notifying the element of the supported maximum received NSS in the operation mode; alternatively, the supported maximum received NSS indicated by the EHT operation mode notification frame or the EHT operation mode notification element; alternatively, the supported maximum received NSS is indicated with the value of the Rx NSS extension field of the EHT OM control subfield and the value of the Rx NSS field of the OM control subfield.

76. The wireless communication method according to claim 1, wherein, when the operation channel width is equal to a predetermined BW, in an EHT PPDU having the predetermined BW, a maximum reception NSS of a given EHT-MCS value is equal to a smaller one of:

Informing the supported maximum received NSS indicated by the value of the Rx NSS field of the frame in the operation mode; or, notifying the element of the supported maximum received NSS in the operation mode; alternatively, the supported maximum received NSS indicated by the EHT operation mode notification frame or the EHT operation mode notification element; alternatively, the supported maximum received NSS is indicated by the value of the Rx NSS extension field of the EHT OM control subfield together with the value of the Rx NSS field of the OM control subfield.

77. The wireless communication method according to claim 1, wherein, when the operation channel width is greater than or equal to a predetermined BW, in an EHT PPDU having a specific BW smaller than or equal to the predetermined BW, a maximum transmission NSS of a given EHT-MCS value is equal to a smaller one of:

a value of maximum transmit NSS for the given EHT-MCS value in an EHT-MCS mapping subfield of an EHT capability element corresponding to the specific BW; and

a supported maximum transmission NSS indicated by a value of a Tx NSTS field of the notification frame in an operation mode; or, notifying the element of the supported maximum transmission NSS indicated in the operation mode; or, a supported maximum transmission NSS indicated by an EHT operation mode notification frame or an EHT operation mode notification element; or, the supported maximum transmit NSS indicated with the value of the Tx NSTS extension field of the EHT OM control subfield together with the value of the Tx NSTS field of the OM control subfield.

78. The wireless communication method according to claim 1, wherein, when the operation channel width is greater than or equal to a predetermined BW, in an EHT PPDU having the predetermined BW, a maximum transmission NSS of a given EHT-MCS value is equal to a smaller one of:

a value of maximum transmit NSS for the given EHT-MCS value in an EHT-MCS mapping subfield of an EHT capability element corresponding to the predetermined BW; and

the supported maximum transmit NSS indicated by the value of the Tx NSS field of the operation mode notification frame; or, notifying the element of the supported maximum transmission NSS indicated in the operation mode; or, a supported maximum transmission NSS indicated by an EHT operation mode notification frame or an EHT operation mode notification element; or, the supported maximum transmit NSS indicated with the value of the Tx NSTS extension field of the EHT OM control subfield together with the value of the Tx NSTS field of the OM control subfield.

79. The wireless communication method according to claim 1, wherein, when the operation channel width is equal to a predetermined BW, in an EHT PPDU having the predetermined BW, a maximum transmission NSS of a given EHT-MCS value is equal to a smaller one of:

The supported maximum transmit NSS indicated by the value of the Tx NSS field of the operation mode notification frame; or, notifying the element of the supported maximum transmission NSS indicated in the operation mode; or, a supported maximum transmission NSS indicated by an EHT operation mode notification frame or an EHT operation mode notification element; alternatively, the supported maximum transmit NSS is indicated with the value of the Tx NSTS extension field of the EHT OM control subfield and the value of the Tx NSTS field of the OM control subfield together.

80. A method of wireless communication, comprising:

the access point AP determines operation mode information, which includes: when transmitting or receiving an extremely high throughput EHT physical layer protocol data unit PPDU, the maximum number of spatial streams NSS supported by the AP; and

the AP determines the maximum NSS based on an operating channel width of the AP and a bandwidth BW of the EHT PPDU.

81. The wireless communication method of claim 80, wherein the operating mode information further comprises the operating channel width, and the operating mode information is carried in an operating mode notification frame or an operating mode notification element, the operating mode notification element being contained in one medium access control, MAC, frame; wherein the operation mode notification frame and the operation mode notification element each include an operation mode field and an EHT operation mode field.

82. The wireless communication method of claim 81, wherein the operation mode notification frame is a very high throughput VHT action frame when the operation mode information is carried in the operation mode notification frame.

83. The wireless communication method of claim 81, wherein the operating mode field comprises: a channel width subfield and a 160/80+80bw subfield, the EHT operation mode field including a 320BW subfield; and wherein the operating channel width is indicated by the channel width subfield, the 160/80+80bw subfield, and the 320BW subfield.

84. The wireless communication method of claim 83, wherein the operation mode field further comprises an Rx NSS type subfield, and the operation channel width at reception and at transmission supported is indicated by the channel width subfield, the 160/80+80bw subfield, and the 320BW subfield when the Rx NSS type subfield is a predetermined value.

85. The wireless communication method of claim 83, wherein the operating channel width is 320MHz when the channel width subfield is 2, the 160/80+80bw subfield is 0, and the 320BW subfield is 1.

86. The wireless communication method of claim 81, wherein the operation mode field includes an Rx NSS subfield, the EHT operation mode field includes an Rx NSS extension subfield, and the Rx NSS extension subfield and the Rx NSS subfield are used to indicate a maximum NSS upon supported reception.

87. The wireless communications method of claim 86, wherein the Rx NSS extension subfield indicates with the Rx NSS subfield that when the operating channel width is less than or equal to a predetermined BW: and a maximum NSS supported when receiving an EHT PPDU having a BW less than or equal to the operating channel width.

88. The wireless communications method of claim 86, wherein the Rx NSS extension subfield indicates with the Rx NSS subfield that when the operating channel width is greater than a predetermined BW: and a supported maximum NSS when receiving the EHT PPDU with a specific BW, wherein the specific BW is smaller than or equal to the predetermined BW.

89. The wireless communication method of claim 86, wherein the Rx NSS extension subfield provides a most significant bit MSB of a maximum NSS for reception and the Rx NSS subfield provides a number of least significant bits LSB of the maximum NSS for reception.

90. The wireless communication method of claim 81, wherein the EHT operation mode field includes an Rx NSS subfield corresponding to a predetermined BW; and wherein the Rx NSS subfield indicates a supported maximum NSS when receiving an EHT PPDU with the predetermined BW when the operation channel width is the predetermined BW.

91. The wireless communications method of claim 87, wherein the predetermined BW is 80MHz.

92. The wireless communications method of claim 88, wherein the predetermined BW is 80MHz and the specific BW is 20MHz, 40MHz, or 80MHz.

93. The wireless communication method of claim 90, wherein the predetermined BW is 160MHz or 320MHz.

94. The wireless communication method of claim 80, wherein the operating mode information further includes the operating channel width, and the operating mode information is carried in an EHT operating mode notification frame or an EHT operating mode notification element, the EHT operating mode notification element being contained in one medium access control, MAC, frame; wherein the EHT operation mode notification frame and the EHT operation mode notification element each include an EHT operation mode field.

95. The wireless communication method of claim 94, wherein the EHT operation mode notification frame is an EHT action frame when the operation mode information is carried in the EHT operation mode notification frame.

96. The wireless communication method of claim 94, wherein the EHT operation mode field includes a channel width subfield indicating the supported operating channel widths at reception and at transmission.

97. The wireless communication method of claim 96, wherein the operating channel width is 320MHz when the channel width subfield is a predetermined value.

98. The wireless communication method of claim 94, wherein the EHT operation mode field includes an Rx NSS subfield, and the Rx NSS subfield is used to indicate a maximum NSS at supported reception.

99. The wireless communication method of claim 98, wherein the Rx NSS subfield indicates that when the operating channel width is less than or equal to a predetermined BW: and a maximum NSS supported when receiving an EHT PPDU having a BW less than or equal to the operating channel width.

100. The wireless communication method of claim 98, wherein the Rx NSS subfield indicates that when the operating channel width is greater than a predetermined BW: and a supported maximum NSS when receiving the EHT PPDU with a specific BW, wherein the specific BW is smaller than or equal to the predetermined BW.

101. The wireless communication method of claim 98, wherein the Rx NSS subfield indicates a supported maximum NSS when receiving an EHT PPDU with a predetermined BW when the operating channel width is equal to the predetermined BW.

102. The wireless communication method of claim 99, wherein the predetermined BW is 80MHz.

103. The wireless communication method of claim 100, wherein the predetermined BW is 80MHz, and the specific BW is 20MHz, 40MHz, or 80MHz.

104. The wireless communications method of claim 101, wherein the predetermined BW is 160MHz or 320MHz.

105. The wireless communication method of claim 80, wherein the operating mode information further comprises the operating channel width, the operating mode information carried in a high efficiency HE variant high throughput HT control field of a data frame or a management frame, the HE variant HT control field comprising an operating mode OM control subfield and an EHT OM control subfield.

106. The wireless communication method of claim 105, wherein the OM control subfield comprises: a channel width subfield, the EHT OM control subfield including a channel width extension subfield; and wherein the operating channel width is indicated by the channel width extension subfield and the channel width subfield together.

107. The wireless communication method of claim 105, wherein the OM control subfield includes an Rx NSS subfield, the EHT OM control subfield includes an Rx NSS extension subfield, and the Rx NSS extension subfield and the Rx NSS subfield are used to indicate a maximum NSS at a supported reception.

108. The wireless communication method of claim 107, wherein the Rx NSS extension subfield indicates with the Rx NSS subfield that when the operating channel width is less than or equal to a first predetermined BW: and a maximum NSS supported when receiving an EHT PPDU having a BW less than or equal to the operating channel width.

109. The wireless communication method of claim 107, wherein the Rx NSS extension subfield indicates with the Rx NSS subfield that when the operating channel width is equal to a second predetermined BW: and a supported maximum NSS when receiving an EHT PPDU having a BW less than or equal to a first predetermined BW, the first predetermined BW being less than the second predetermined BW.

110. The wireless communication method of claim 107, wherein when the operating channel width is equal to a second predetermined BW, the supported maximum NSS upon receiving an EHT PPDU having the second predetermined BW is determined by a round-down floor function of a product of an Rx NSS value derived from the EHT OM control subfield and the OM control subfield and a ratio of a maximum received NSS corresponding to all Rx EHT-MCS values at the second predetermined BW to a maximum received NSS corresponding to all Rx EHT-MCS values at a first predetermined BW, the first predetermined BW being less than the second predetermined BW.

111. The wireless communication method of claim 107, wherein the Rx NSS extension subfield indicates with the Rx NSS subfield that when the operating channel width is equal to a third predetermined BW: and a supported maximum NSS when receiving an EHT PPDU having a BW less than or equal to a first predetermined BW, the first predetermined BW being less than the third predetermined BW.

112. The wireless communication method of claim 107, wherein when the operating channel width is equal to a third predetermined BW, the supported maximum NSS upon receipt of an EHT PPDU having a second predetermined BW that is less than the third predetermined BW is determined by a round-down floor function of a product of an Rx NSS value derived from the EHT OM control subfield and the OM control subfield and a ratio of a maximum received NSS corresponding to all Rx EHT-MCS values at the second predetermined BW to a maximum received NSS corresponding to all Rx EHT-MCS values at a first predetermined BW that is less than the second predetermined BW.

113. The wireless communication method of claim 107, wherein when the operating channel width is equal to a third predetermined BW, the supported maximum NSS upon receiving an EHT PPDU having the third predetermined BW is determined by a round-down floor function of a product of an Rx NSS value derived from the EHT OM control subfield and the OM control subfield and a ratio of a maximum received NSS corresponding to all Rx EHT-MCS values at the third predetermined BW to a maximum received NSS corresponding to all Rx EHT-MCS values at a first predetermined BW, the first predetermined BW being less than the third predetermined BW.

114. The wireless communication method of claim 107, wherein when the operating channel width is equal to a third predetermined BW, the supported maximum NSS when receiving an EHT PPDU with a third predetermined BW is determined by a floor down function of a product of the supported maximum NSS when receiving an EHT PPDU with a second predetermined BW and a ratio of the maximum received NSS corresponding to all Rx EHT-MCS values at the third predetermined BW to the maximum received NSS corresponding to all Rx EHT-MCS values at the second predetermined BW, the second predetermined BW being greater than the first predetermined BW and less than the third predetermined BW.

115. The wireless communication method of claim 107, wherein the Rx NSS extension subfield indicates with the Rx NSS subfield that when the operating channel width is equal to a third predetermined BW: and a supported maximum NSS when receiving an EHT PPDU having a BW less than or equal to a second predetermined BW, the second predetermined BW being less than the third predetermined BW.

116. The wireless communication method of claim 107, wherein when the operating channel width is equal to a third predetermined BW, the supported maximum NSS upon receiving an EHT PPDU having the third predetermined BW is determined by a round-down floor function of a product of an Rx NSS value derived from the EHT OM control subfield and the OM control subfield and a ratio of a maximum received NSS corresponding to all Rx EHT-MCS values at the third predetermined BW to a maximum received NSS corresponding to all Rx EHT-MCS values at a second predetermined BW, the second predetermined BW being greater than the first predetermined BW and less than the third predetermined BW.

117. The wireless communication method of claim 107, wherein when the operating channel width is equal to a third predetermined BW, the supported maximum NSS upon receipt of an EHT PPDU having the BW less than or equal to a first predetermined BW is determined by a round-down floor function of a product of an Rx NSS value derived from the EHT OM control subfield and the OM control subfield and a ratio of a maximum received NSS corresponding to all Rx EHT-MCS values at the first predetermined BW to a maximum received NSS corresponding to all Rx EHT-MCS values at a second predetermined BW, the second predetermined BW being greater than the first predetermined BW and less than the third predetermined BW.

118. The wireless communication method of any of claims 107 and 111, wherein the Rx NSS extension subfield provides a most significant bit MSB of a maximum NSS for reception and the Rx NSS subfield provides a number of least significant bits LSBs of the maximum NSS for reception.

119. The wireless communications method of claim 108, wherein the first predetermined BW is 80MHz.

120. The wireless communication method of any of claims 109 and 110, wherein the first predetermined BW is 80MHz and the second predetermined BW is 160MHz.

121. The wireless communication method of any of claims 111 and 113, wherein the first predetermined BW is 80MHz and the third predetermined BW is 320MHz.

122. The wireless communications method of claim 115, wherein the second predetermined BW is 160MHz and the third predetermined BW is 320MHz.

123. The wireless communication method of any of claims 114, 116 and 117, wherein the first predetermined BW is 80MHz, the second predetermined BW is 160MHz, and the third predetermined BW is 320MHz.

124. The wireless communication method of claim 80, wherein, when the operating channel width is greater than or equal to a predetermined BW, in an EHT PPDU having a particular BW less than or equal to the predetermined BW, a maximum received NSS for a given EHT-MCS value is equal to a smaller one of:

125. The wireless communication method of claim 80, wherein, when the operating channel width is greater than or equal to a predetermined BW, in an EHT PPDU having the predetermined BW, a maximum received NSS for a given EHT-MCS value is equal to a smaller one of:

126. The wireless communication method of claim 80, wherein, when the operating channel width is equal to a predetermined BW, in an EHT PPDU having the predetermined BW, a maximum received NSS for a given EHT-MCS value is equal to a smaller one of:

127. The wireless communication method of claim 80, wherein, when the operating channel width is greater than or equal to a predetermined BW, in an EHT PPDU having a specific BW less than or equal to the predetermined BW, a maximum transmission NSS for a given EHT-MCS value is equal to a smaller one of:

128. The wireless communication method of claim 80, wherein, when the operating channel width is greater than or equal to a predetermined BW, in an EHT PPDU having the predetermined BW, a maximum transmission NSS for a given EHT-MCS value is equal to a smaller one of:

129. The wireless communication method of claim 80, wherein, when the operating channel width is equal to a predetermined BW, in an EHT PPDU having the predetermined BW, a maximum transmission NSS for a given EHT-MCS value is equal to a smaller one of:

130. A station STA, comprising:

a memory;

a transceiver; and

a processor coupled to the memory and the transceiver;

wherein the processor is configured to perform the method of any one of claims 1 to 79.

131. An access point, AP, comprising:

a memory;

a transceiver; and

a processor coupled to the memory and the transceiver;

wherein the processor is configured to perform the method of any one of claims 80 to 129.

132. A non-transitory machine-readable storage medium having instructions stored thereon, which when executed by a computer, cause the computer to perform the method of any of claims 1 to 129.

133. A chip, comprising:

a processor for invoking and running a computer program stored in memory to cause a device on which the chip is installed to perform the method of any of claims 1-129.

134. A computer readable storage medium storing a computer program, wherein the computer program causes a computer to perform the method of any one of claims 1 to 129.

135. A computer program product comprising a computer program, wherein the computer program causes a computer to perform the method according to any one of claims 1 to 129.

136. A computer program, wherein the computer program causes a computer to perform the method of any one of claims 1 to 129.